Dont waist your money on ported manifolds. That is just a larger hole in an inefficent system. Save up your money and buy headers. There worth the money.
inst that just cute. Ask robertP how slow his car is with ported manifolds......mid 11s arent that quick, or are they. See, knocking prestons work without actually seeing it, isnt a very good thing to do. Ive seen said coated and ported manifolds. But also, its not nice to knock a local guy, especially when he can easily outrun you
i dont know anything about having my manifolds ported.....oh wait, I do I watched someone port them. But what you havent touched on is something very fundamental.......We have three options.
1. Ported oem manifolds, they work they dont crack and can be worked with.
2. JBA manifolds, notorious for cracking, dont show much of a power gain, have smaller runners than the exhaust ports, and for the work, dont yield much power.
3. Lastly, the Kooks headers and for a mildly modd'd motor, they typically wont do a lot, they are pricey, they do look good, but you better have a new starter.
So, crunch the numbers and see where you are at.
BTW, quite a few of us on this website know a thing or three about these cars, we speak from experience and informing us about stuff wont win us over.