Looks to be a sweet car! The Pro Street market is very competitive these days and cars are going cheap on www.Racingjunk.com
Maybe you can browse through there and get a better idea on pricing. Posting your car there may give better results too. It's my go to hot rod classifieds site.
Can you post up more details of the build, octane requirements and power numbers?
CHP/CPR (Coast High Performance) / (Custom Performance Racing Engines)347 lasted a whopping 500 miles due to poor machining, metal debris in main bearings, damaged cam bearing and a balance job that was off 64ozs!