have a 1990 integra RS with a b18a1 motor. i want performance stage 2 cams with pistons and rods. i want skunk 2 cams. what pistons would work right for my motor. is there anything i need 2 change or worry about? do i have to take the motor out to put cams in? how do you install cams on a b18a1 non vtec. someone please answer my question. thanks "flash"