I AM RUNNING THE STAGE 4 103 KIT FROM HARLEY THE KIT COMES WITH 259E cams. i am dropping it off at RCcycles today in about one hour having them put the open air kit, 2 into 1 thunderheader and SE racetuner in then puttin her on the dyno. i will post results tonight. to anyone who is considering this kit i say go for it! i love it! and i know that once i get it from the shop today i will love it 10times more!