Used parts - (thanks Wease)
Cam - 250
Headers - 300
MSD wires - 50
ASP underdrive pulley - 75
New parts - performance
Comp cam valve springs - 200
Thunder Racing Pushrods - 180
Corsa exhaust - 675
UMI suspension - 350
Hotchkis springs - 200
Short shifter - 50
Off road Y-pipe - 100
SLP lid - 100
Tune / dyno time - 300
New parts - show
Wheels / tires - 1400
Tint - 150
Gauges - 150
About 2800 in performance parts netted me a ~80 RWHP gain over stock. The car dyno'd at 332 with a lid and cat back, 383 with the full boltons and cam. It was never dyno's completely stock. All of the parts were installed in my garage with the help of others in Cofba.
I don't think 2800 is too bad but the car was not real cheap - 24,900 4 years ago.