Once a standard 500cc Bullet has been bored & stroked to 612cc, with needle-roller big-end, forged con-rod, high-comp forged piston, uprated cams, alloy barrel, 5-speed gearbox (keeping the right-hand up-for-down gearchange of course) electronic ignition, uprated brakes, uprated suspension, a GT cafe-racer kit, handlebar fairing, uprated electrics, etc, etc......then it'll be just like mine!!