It's actually possible to do this with 1st generation Camaros (1967-69). Someone thought ahead and saved the original tool and die casts before GM destroyed them. Some googling will find you sources for parts: from frame and body to seats adn trim. From what I've read, it costs somewhere in the realm of 12-20k. Not bad for a clone of what is the most fantastic American muscle car to ever be made with modern reliability.