Digital BW, The Print

I use the Piezography BW plugin (version 6 which prints 16-bit files) 
and always scan my b&w negs in the 16-bit mode.

Before, in order to sharpen my picture (just before printing), I used 
the UltraSharpen Pro actions set which does not work with 16-bit 
files (because of the layers I suppose).

Question : how to sharpen the finalized version of my pics in PS7 
without going down to the 8-bit mode and then back to the 16-bit for 
the print process?

May be the sharpener pro software of Nik deals now with 16-bit files 
(I do not think so, but please confirm).

Thanks

Jean-Marc Humbert
Paris, France