So I scored a spare GSR intake manifold for damn near nothing a few weeks ago, and I'm finally getting around to porting it. I'm going for something like the DH racing manifold: Only thing I'm going to do different is make the dividers a little lower, maybe a half-inch or so...I was also thinking about maybe staggering them so that the one closest to the TB is shorter/lower, and they rise up by a millimeter or 2 as they go away from the TB... The red is a general outline of what I'm taking out...not exact, but close. Thanks to ImageShack for Free Image Hosting Also, I know Erick Aguilar used 2 spacer thingies on his manifold...anyone have any idea why? Obviously it works, seeing as he ran 9's on a more or less stock GSR manifold....but what's the science behind it? Comments? Please don't give me any 'Just buy a skunk2 manifold' bullshit. I'm not losing any money, and I want to see how much power can be made with a stocker. Comments? Suggestions?