last thing just to make sure cause i dont want to be running around and im trying to figure out the price of everything

2-2.25 in. clamps
2-3 in. clamps
o2 extension harness
rtv
3 in. flex pipe
and felpro gasket? Felpro/Exhaust Manifold Gasket (MS95808) | 1999 Pontiac Grand Prix 6 Cylinders 1 3.8L SFI SC OHV | AutoZone.com

am i missing anything?