A friend of mine blowed his '09 EFI SM510R gearbox. He can get a '07 SM450R without the carb for a cheap price I think he can swap the blown 510 engine for the 450, keeping the 510 exhaust end throttle body w/ injector on the bike. Then he will only need a '09 or '10 SM450R electronic device (ecu) to complete the swap (450 and 510 share the same EFI throttle body on the part list, but not the ecu). Am I right, or do I miss something else (rotor, sensors, engine connections ...) ? Thanks (for him) L