Marcos Maniacs

Can you gentlepersons give me your take on a fair price for my mini marcos?  I have been debating the car's value with BAT who will be running an exclusive.  It is hard to value.  Maybe it would be better placed on ebay.  

Here is my ad (drafted in large part by Andy Seward):  

Description: 1967 Mini Marcos GT, chassis #7073. The former Elmhorn-Troberg Racing Services (Sweden) race car.  Excellent, unrestored condition with just 17,300 km (10,750 miles) on the chassis in 39 years.  Many period speed modifications.  Fully street legal.  A highly original early Mini Marcos with superb patina. FIA homologation papers (group 4); homologated weight 1200 lbs!
 
History: The Mini Marcos GT was designed by Marcos Cars (UK) in the mid-1960s as a special 2-seat sports car body / chassis for Austin or Morris Mini and Cooper S drivetrain and suspension components.  Most were sold as kits.  This particular car, chassis #7073, was built up to full spec (have photos from March 1967 to prove this) at the MARCOS factory in Bradford-on-Avon England in February / March 1967 and sold to Swedish Mini Cooper S racer Mr. Bosse (Bo) Elmhorn of Stockholm.  Chassis #7073 is the same car featured in the Swedish car magazine Teknikens Varld (Technical World) in 1967 and raced in period FIA specification with 120hp BMC Mini Cooper S Group 2 special tuning engine and gearbox by Mr. Elmhorn in Sweden and Denmark.  It was also featured in a 1967 Mini Marcos sales brochure for the Scandanavian market.  
 
Mini Marcos cars were prominent in 1960s international and club racing; a similar car was the only British car to finish in the 1966 Le Mans 24 hours endurance race where it was clocked at 147 mph on the Mulsanne Straight. 
 
Think of the Mini Marcos as a classic Austin / Morris Mini Cooper or Cooper S wrapped in a sports car body that is significantly lighter in weight, sits lower to the ground and is aerodynamically superior.  
 
Related websites: 
History of chassis #7073: http://www.minimarcos.org.uk/memcars/7073/article/index.html 
Additional photos of #7073: http://www.minimarcos.org.uk/memcars/7073/arizona/index.html  
http://www.bjorns-story.se/private/motorklubbhtm/ssk1_1_eng.htm  
http://autos.ph.groups.yahoo.com/group/MarcosManiacs/photos 
  
Technical Description: 
Chassis: Two-seater fiberglass right-hand drive monocoque with Mini Mk1 subframes front and rear. 
 
Engine: Austin 1275GT bored to 1380cc (73.5mm bore); Horsepower: ~100; Twin SU H4 (not HS4) carbs on MOWOG 12A661 inlet manifold; Derrington formula junior intake trumpets / velocity stacks (homologated for side draft weber); SPQR throttle cable and quadrant; M.E.D. (UK) Rally spec cylinder head with ported, unleaded fuel valve seats; Derrington alloy rocker / valve cover; Engine block is a 1275GT BMC A-series (not later A+ block); 1275GT crankshaft and connecting rods; Hepolite pistons; Piper 270 camshaft; M.E.D. full roller rocker valve train with oversized valves; Long Center Branch (LCB) works type header and stainless steel single-box exhaust from Mini Mania. 
Oil/Water System:  Custom aluminum radiator with expansion tank, front mounted (original side-mount radiator goes with car); Austin Mini water pump; Aluminum Oil Cooler. 
 
Electrical System:  Aldon modified Lucas distributor; 1960s Champion WCX600 spark plug caps (now off because they did not work well); Lucas generator / dynamo with 1960s Lucas gold sports coil; 12-volt battery; Lucas 4FJ fuse box and Lucas RB106 voltage regulator; SEV Marchal Amplilux headlamps; BMC Mini Traveller van rear lamps; Clear glass Lucas indicator / turn signal lamps. 
 
Transmission / Gearbox: Four-speed Austin A-series remote Type 12G288 and 3.4 final drive (rebuilt with less than ten miles). 
 
Body and Chassis:  Fiberglass monocoque body construction, painted in red enamel over gel-coat. Monocoque / unibody Right Hand Drive (RHD) chassis built by Marcos Cars Ltd. UK in fiberglass with reinforced stress areas. 
 
Front Suspension: Mk 1 Mini with recent (2004) Dunlop rubber cones; fully adjustable Rip-Speed Hi-Lo units; Spherical-joint (rose-joint) adjustable lower arms; Spherical-joint tie rods; SPAX adjustable shocks / dampers.    
 
Rear Suspension: Mk 1 Mini with recent Dunlop rubber cones; Fully adjustable Rip-Speed Hi-Lo; SPAX shocks / dampers . 
 
Brakes: 1960s Mk1 Cooper S disc front brakes; Super Mini Fin alloy drum rear brakes; MkI Mini servo mounted in engine compartment. 
 
Steering: Mini Mk 1 steering column and rack; Minilite magnesium 5.5 inches x 10 inch wheels; Yokohama A008 tires. 
 
Interior: Black/red color scheme; Original Marcos seats, recently restored with leather facing surfaces, vinyl backs and Recaro-type black cord centers and with adjustable fore-aft sliders; Marcos original carpeting; Original Triplex windows except side windows; Britax 3-point rally harness (later style) seat belts; 1960s Jaeger gauges / instruments (8K electric tach, cable-driven speedo with gear box, oil pressure, oil temp, water temp, fuel gauges); Twin Heuer stop watches mounted with a 12-hour mechanical clock in aluminum navigator panel; Lucas switches + Wipac rally high/lo beam long arm flasher; Speedwell switch grip extensions; oil pressure and high beam warning lamps; Neiman ignition switch with steering column lock; 1960s Moto-lita 13.5 inch diameter leather-rimmed steering wheel with tulip mounting boss. 
 
Accessories:  Factory installed original roll bar with additional crossbar fitted using 1960s John Aley cast alloy clamps; Les Leston shift knob on Speedwell 3 inch gear shift extension; Fire extinguisher; Barnacle rear view mirror; Talbot Green Dot Berlin side mirrors; 1960s S.P.Q.R. Adjusta-Throttle accelerator pedal; Mini heater with fresh air intake modification; Enots chrome Aston flip filler petrol / gas cap. 
 
Papers:  Clear U.S. title and registration; 1960s Mini Marcos brochures; Original photos of chassis #7073 from 1967; Original Swedish official papers; U.S. DOT import authorization papers; Various correspondence related to this car. 
 
Problems:  Normal rock chips.  Where the factory roll bar is bonded into the roof there are some stress cracks to the exterior paint owing to the fiberglass and roll bar steel expanding and contracting at different rates over the last 39 years.  There is a similar small paint spider crack where the rear Mini sub frame mounts to the chassis.  Oil leak in from engine compartment area which I have lived with for years, may be a result of using synthetic oil since it appeared same time as I started using synthetic.  I've been unable to figure out where it's coming from and have lived with it for so long that I'd almost forgotten it.  
 
This car is sold as is and without warranty, and it is up to the buyer to pursue any further inspection, etc.  I have described #7073 to the best of my ability. The car is available for viewing at any time and I can arrange for a pre-purchase inspection at the potential buyers expense.  

Pete psteilberg at mhlseattle.com