The guy who's selling this car is a very highly respected member over at nastyz28.com His name is Rich Pern and he has some medical issues, that's why he's selling the car. When he found the car years back, it was documented in several magazines and I'm sure the car is legit. Here's a link to the thread over on nastyz28...it links to his ebay add and a website he set up for this car.
http://www.nastyz28.com/forum/showthread.php?t=207991