i will be installing new turbos,flywheel and downpipes and i was thinking about getting the MS manifolds but not sure if its worth spending and extra 1200 right now. I will be buying the gt600r kit and the 5 bolt downpipes and that comes out to 3000 or so. My car has 135,000 miles on it so i was debating on either getting the MS Mani or changing the pistons and getting the engine rebuild kit. the car was running strong and well taken care of except the stock turbo that went out.