[hemi43]

Old post, but very cool how they used to do it before computers. Today it's much different. The pics are what's used today as the master model for a given vehicle. This is the master jig for the Camaro when it first came out. It's made from solid aluminum, and all the opening panels including the interior can be bolted to it. This was used to test fit all the pieces, and it's the only one in the world. If fact, if you look closely at the first picture, the deck lid is a production part bolted to the jig.
The previous master jig for the Monte Carlo was completely made from carbon fiber. I'll see if I can dig up any pics from that one because it looked cool.