So you all are telling me it's not worth extrude-honing my exhaust manifolds?!?...I ported them myself, and there are still places I couldn't get to the way I wanted. But I'll take your word on it and work at it some more. Thanx, sorry for the big sig, I'm working on reducing it(thanks Gamblerz), I didn't even thing the link still worked :)...any body wanna give me some pointers on how much meterial I can take out before I see daylight.