Not really sure if you'd be able to get your money back on that one. New injectors can be cleaned for cheap if not you can purchase S1 injectors for like 50 bucks on here with minimal miles on em. As for the plugs/wires, the ngk 4306 are about the best bang for the buck, and you can get MSD 8.5mm wires from modern performance for about 50 bucks. Exactly which code did you get that made you decide to replace all the gaskets and seals? When the check engine light comes on it usually sends ya into limp mode, meaning the car will run like shit no matter what you do until you recet the pcm...did that ever happen?