No, my understanding is that the pipes should exit behind the rear tire, like on the 67 and 68 Firebirds. I have no proof for that, though. You sometimes see Firebirds with exhausts that exit out the back, especially here in Sweden where it in the 1970:s and 1980:s was against the law to have an exhaust that didn't exit at the rear, but my thinking is that those cars are not original.

I hope someone else can confirm my thoughts.