174/177 supercharged small block, where to start?

Seen a brand new NOS one sell on ebay not long ago for about $2,600.

Whenever I see that setup I think of the Jim Henn Nova that use to run around So. Cal. no trailer and running 10.00's at 135mph. Jim was running that blower and nitrous on a small block Chevy in an early Nova, total sleeper! You can google the name and probably find some info on the car and motor.

Here is that ebay one, guess it was a little smaller than what you're looking for.
http://www.ebay.com/itm/B-M-Blower-...OD41TcZjr3iTzIHw84mt1wQ=&orig_cvip=true&rt=nc