You guys are on the right track but your going to skew the results. First off there is a point where it's no longer cost effective to compare the two. Once you set the baseline HP so high that the SB guy has to use 18 deg heads then you've skewed the contest in favor of the BB. Why not keep like I said at 700 or 750HP. Would it be because a BB can't make HP dollar for dollar until you get over that magic number? :wink: