The lowest hanging fruit on a 5th gen would be rear sub-frame bush inserts (Pedders EP1200) followed by the front radius bush inserts (EP6578). You will find your 5th Gen to be far more stable and predictable. You can do these individually or as a package in a Street I.
Add lowering coils and you have a great handling, great looking 5th gen for about $700. To understand more about why we strongly recommend starting at the foundational level with your 5th Gen we have posted a detailed write up on 5th Gen suspension in this forum.
http://www.camaro5.com/forums/showth...t=pedders+book