OBERHEIM SYNTH

Hi, I'm thinking about getting another OBXA, haven't had one in many 
years and thinking it may be time to pick up another one.  

However, I will want midi on it but I can't seem to find anywhere that 
has a kit.  I've got moderate soldering skills and I would love to get 
something that I could install myself so I don't have to pay a tech to 
install it.  I've got a Kenton Pro 2000 CV to Midi convertor but I'm 
pretty sure the OBXA doesn't have CV/Gate, DCB, or S-trig.

Any help would be appreciated.

Also, if you know of an OBXA 120 patch with 8 voices in great shape I'm 
probably interested as I'm tired of fighting for one on Ebay already.

Thanks in advance, oh, I'm in Ohio if it matters.