Wobble
Probably bad bushings in the lower control arms. Maybe uppers, but lowers are easier to get to, and I think they are more likely to cause wobble. One step up, and pretty cheap, are the 1LE bushings from a Camaro/Firebird. Next step would be poly bushings, which may squeak. 1LE lower control arms are an improvement, or you can box your stock arms, or you can buy any number of "high performance" arms from Lakewood, Hotchkiss, Edlebrock, etc. Some of the aftermarket lower arms will come with bushings. It's probably not the arms causing the wobble, though, bushings more likely. The stock arms can cause "tramp", on launch, though. This is just my thoughts, others may have, and probably will have, different opinions. But it's free advice, what can you expect?