i am completely uneducated about port polishing and what it does, but a friend of mine that has a v6 firebird(which i smoked) is going to have a guy do the port polishing for him. from what little i know it is just widening the intake or something like that. if anybody knows anything about this i would love to know, and can it be done to our mx6's. i am about to replace my valve cover gaskets and figured that it wouldn't be too much to take off the heads as well. i am also thinking about phenolic spacers. thanks for the help.