is the car a hard top or a post? if you don't have to have a clone, your build would be easier, to build a bird that looks like a bird. there are some features on a factory bird that i don't care for. i didn't do the rear window conversion, (left the factory "b" body back light) i think it looks better and,90% of the people don't know the difference. other things like that. there good sources for parts.