yes i know this one. It'* a beauty! I have a shot of it from the front (i can see if i can post it somehow if anyone wants to see it). Anyway it'* a real slick car! I heard this is Pontiac'* original concept for the then Bonneville. It was based on the corvette body as mentioned earlier and it is called the Bonneville Special. Pontiac made it for concept and it never got the green light for production and the rest is history !
p.*. would have been interesting to see how far the bonneville would have gone / lasted etc if it was a corvette like car!