DO IT. Get the cam whith 12v lobe and youll be golden. Ive run mine for about 2 years with out a regulator (prolly shouldnt have) and no problems. i have bout 30 at idle and dont really know after that. i unhooked the fp guage, got tired of it tapping off the 30+ peg. If your going to do the cam the rest of your fuel stuff will be cheaper and more reliabe than the FASS.
jeremie