This isn't my car (it's Jeremy Reed's) but this is mostly what my Pontiac 2+2 looked like. It had different pinstriping and it had tasteful splash guards behind each wheel (which improved its looks IMHO) but more or less, this is what it looked like. That's a bubble back window of monstrous proportion, eh?
The original car had a 305CID motor, and a very choked-up exhaust. The biggest boost that the car got from the original owner of my car (Wayne) was larger carbeurator jets and a free-flow exhaust. I went a lot further with the car later with a Holley carb, Edelbrock intake, Edelbrock cam, and more. However, this car had a curse on it... the car hit two deer that I know of, was in numerous accidents for all owners and had sweeping, constant mechanical/electrical failures that nobody could track down. I hope other people had better luck than we did with the car I got.