ok my gf has a 2002 sunfire 4dr, we would like to do some work on it. like suspension work what would be the best things to buy and from were, we were thinking about lowering the car some and better shock and springs,and braces to make the car handle better she has 17in rims on there now.what would be the price range for a whole suspension upgrade

500 for a good lowering setup which would be kyb agx struts and eibach pro kit which will lower the car 1.4". its a good mild drop. also sway bars for the front and rear which will be 300 for both. so around 800 bucks. it really all depends on how far you want to take it.

shameless plug... i'm selling koni yellows and goldline lowering springs that I recently took off my 02 cavalier sedan. only looking for $400.

that aside, struts and springs are a great start. sway bars help a bunch too.