After spending 3 12 hour days in the shop I am finally done with my head gasket replacement!! I polished up my intake and exhaust ports and cleaned out all the build up that 85k miles does to an engine, and replaced the timing belt and water pump too. Do you guys think that with the combo of taking one layer of the gasket, all the polishing and cleaning of EVERYTHING will give me more gas mileage and better 1/4 time?? if so, how much difference do you think??