i had a 2.4 and sent it back for the 3.2 because it was below recommended engine size for the gp wagstaff.it had the word brison machined into it.im interested in performance too,thats why i question the 3.2 originality.if it were one with the blue case i probably wouldnt have had an continue to have the problem with the hall sensor.theres an eighth inch gap between it and prop hub and no way to adjust that gap.what lil ive run the engine it is very strong.it has the syncro spark auto advance ignition.im not disappointed in its power just the fact that for a lil over 600.00 i shouldnt be having problems out of the box.the 3.2 has only a tiny sticker that says brison.........peel that off and its anybodys guess