Got the manifold from somebody that was going to build a turbo 240sx but instead decided to sell the car and build a Datsun. Ok, the setup right now- the intake tube runs all the way down for Ram air, there is no problems at all. IF you like top mount, then thats good. But not all of us do, and not all of us want to buy those POS cast iron Rev-hard manifolds, which crack often. (experience from friends already). So everyone has their own opinions. take it easy.