Am planning a 103" upgrade with SE htcc cnc heads, SE stroker pistons, SE 50 MM trottle body, 10.5 to 1 compression ratio and was looking for a gear drive cam to match up, otherwise the SR 260 cam would work. This is for an 07 fatboy, dealer recommends trying the S&S 625 due to S&S description seems to fit but don't know if that is to much cam for this set up and heard they may have togrind the cam and crank caseto fit the gear drive in?