anywhere u want pal. the choice is yours. freeeedomm. well that is if u feel like drillinh a hole, and bolting to a hunk of steel plate or lumber and then hose/clamp or u bolt the battery directly. Don't tap die into the bike frame especially if its aluminum, its a lil to thin. bolt it bike aluminum is junk for tap/die and the threads will fail..............defiantly will fit over the motor and if not, the headlight thing hole in the front will work as theres a hole drilled and threaded I think 1/4unc......... that u can add a lil platform a bob for it.....