I've rebuilt the engine kept the forged pistons, bigger cam, 2 1/2 pipes, 373 gears, cold air kit, 70mm mass air, K&N filter, 1 5/8 BBK headers, Ajustable rear sway bar, subframe connectors, strutt tower brace, Konig shocks, I have an MSD distributor and ignition control box but havent installed them yet. All this I've done slowly cause it aint cheap. I keep the car clean try to do all the work myself.