Does it have the original engine? Is it fully documented? Mine is a 1970 NOM that sat for 24 years and is now on the road. I will not do an NCRS restoration, but rather a resurrection. The body, chassis, and interior will be bone stock. The engine will be built to spec but modern cam, headers, ignition (distibutor and wires), original ignition shielding, but not spark plug heat shields, no AIR system, and black/silver paint scheme.
It is possible to build a numbers matching 1970 LT-1 engine from scratch with the right amount of money, including restamping the engine pad. Therefore, I would recommend (this after countless converstaiojns with NCRS folk and LT-1 owners) only modding the engine. While it will sell for $10k less than a full NCRS car, it can be remade to a full NCRS later. Mods to the mody, chassis, and interior will much more drastically reduce the price of the car.