Rebodying is a lot more common than you can think. This topic causes lots of debate. Homeboy takes an abused rusted-out hulk, cuts what he can off of the cowl, core support and floorpans. His slant six deputy roller gets the cowl patched in, and whatever he can use off of the 1970 Rustoleum. Now, while the roller gets all the remaining salvageable big block parts. Is it a big block car, or a slant six clone?
Hmmmm.... This ranks right up there with the question: If you keep a car long enough and eventually replace EVERY part on it, is it the same car? After all, it occupies the same space.