Typically I find that most upgrades are done one at a time.
In my case I went for:
Del-Alum front control arm bushings
Energy Suspension sway bar bushings (front and rear) sized to suit whatever sway bars are on the car, (same for the sway bar end-links)
Tubular rear control arms with a urethane bushing (Edelbrock)
Adjustable pan hard bar with bushings (Edelbrock)
Lowering springs (Intrax)
Top strut mounts that are suited to a lowered vehicle if that's your plan, (Spohn)
If you really want to get into the adjustability, then you can upgrade the shocks to one way or two way adjustables. Follow that up with four corner weight jacks (adjustable coil springs perches) and you've got a road racer.
There are too many choices and directions of build to list it all.
Hotchkiss builds a fairly thorough kit (80018) which has some of what's listed above plus upgrades to sway bars as well as sub-frame connectors.
http://www.hotchkis.net/19821992-camaro ... ystem.htmlProbably one of the most thorough listings for 3rd gen parts is Spohn Performance.
http://www.spohn.net/shop/1982-1992-GM- ... uspension/There are about as many choices as there are people looking for parts.