The following parts are OEM from a 2000 Z28 (obo + shipping). Parts were pulled about 10k miles after the car was bought new.

-pan hard rod ($20)
-springs ($40)
-DeCarbon shocks ($50)
-torque arm ($20
-sway bars ($40)
-exhaust manifolds ($20)
-air lid ($20)
-clutch ($75)
-flywheel ($40)
-shifter ($15)
-3.42 gears ($40)
-Steering wheel w/ airbag and radio controls ($100)
-catalytic convertor2 - brand new! ($100)