yes its a full frame car/ and the rear suspension pieces are very similar between these and 78 up g-bodys. front suspension similar to 70's trans am / camaros. Not sure whats all interchangeable off the top of my head, but I am not afraid to fab it up. The interior replacements are almost non existant but my father in law does upholstery for a living.
his site is
http://www.wlsheadliners.com/
Anyways, I agree with the nascar comment. The early 80's t-bird nascar appeals to me also in some sick way.