@Angrybird
Was the 1964 GTO not based on a lowly Tempest?
Then they put in a beefed up drive train and stuck on a hood with a fake scoop. That was it. It wasn't some super special creation dreamed up by the gods.
The '04 comes in for a lot of hate because it was based on a Holden. The Holden was far and away the best performance platform GM had back then. Was there even anything else RWD besides the Corvette and some trucks?
So GM stuck a big engine and a beefed up drive train (but forgot to put the fake scoop on the hood) into what was already a pretty good platform. I sincerely don't understand what was not to like.
You say badge engineering, it wasn't. Badge engineering is putting a badge from a good car on a sucky car. The Holden was a really good car and deserved the GTO badge just as much as, if not more than, the original Tempest.