What are the best heads for a hot air? Does it even matter becaus 84-87 heads are all interchangable? I need to keep the EGR (damn smog Nazis!). Could I get away with just porting and polishig the stockers? And if while I have the heads off, should I just take out the cam and lifters and replace with a better cam, and if so, which cam? I plan on mid 11's eventually and it is not an everyday driver.