Mine was a 1978 Grand Prix SJ I bought off one of my dad's co-workers. It was the sports model that came with a 301 V8 engine, 4 barrel carb and custon wheels. It wasn't much to look at but it had a lot of giddy up when you hit the gas pedal and a very smmoth ride on the highway.
The only downside was that the original owner was a cigar smoker and in the winter the car would reek when you turned on the heat. Took about a year and some pine tree fresheners hanging from the rearview mirror to get rid of the smell.