I added ARH headers no cats, Magnaflow catback exhaust, Hotchkis sway bars front and back, Spohn Panhard bar, lower control arms and Wilwoods not exactly in that order. It all came together nicely.
My 02 Silverado is supercharged and is my daily when working out here in Louisiana. The 02 also has long tube headers, sway bar up front (only at the moment), tune, and close to color matched & clear powder coated big brakes (pics below).
The Crew Cab has headers, LSX intake, Tune, Hotchkis sway bars front and back, big brakes. All of them are lost of fun to drive. I've enjoyed the supercharged on for quite a while.
I actually have a brand new never used or installed magnaflow catback exhaust. I'll be selling that sometime soon as it would be great to get some garage space back.