i am just wondering if i polish the exhaust pot on my she and the rest of the intake along with the bottom of the cylinder, if that i will notice any power difference. that and along with raising and widening each side of the exhaust por about i mil maybe 1.5mill each side and top. i would rather start with polishing but if there is no signifigant change i might do the minor porting. any advice tips or other information that i might need?