How are the Skunkworks cams for NA then? And do they make cams for the "Frank" engine conversion? Also, when I eventually go for FI, what cams are the best to use and do they make for that engine conversion? Do I go to Greddy or HKS or what other companies are out there that make a bolt on system? Plus, what about engine management? In the bimmer, it was simply replacing the ECU chip, but in Japanese imports, either a piggyback or a whole new ECU is needed correct?