After destroying 3 tubular manifolds I decided to go cast. Everyone runs those slowboyracing manifolds, and i didnt really want to go that direction. ( Ive heard good and bad about them cracking so I stayed away. plus i cracked a few tubulars in the runners and the collectors ) Having a good knowlage of how well Forced Performance made products I looked on their site to see what they offered for my GSX. I saw the way they made their cast DSM Race Manifold, and how it looked like a header in internal design. I recieved it yesterday and was very impressed. Not only did it come in oily plastic to resist rusting, it came with mitsubishi bolts, and nice mls gaskets. This reminded me of an OEM part, and actually looks good under the hood of my car. All I did was sprayed it with some 1500degree black header paint and installed it. I must say I have to give this manifold an A+! fitment was like factory, the hardware and gaskets were superior quaility. The manifold has very big runners and the collector merges better than any tubular one ive seen in the price range. ( I took it out for a ride last night and it does seem to build boost lower in my rpm range. ) I would HIGHLY recomend this to anyone who is looking for an affordable manifold for thier DSM.