i love me pink tail its a really nice rasp to it, ifve found my nitros to be about the same noise level just sounds like a bee when it gets about 300/400 yards
i guess you could by the water cooling head seperately and put it on your engine
as for drive most of the time instead of a pinion the clutch drum is welded or connected to the prop shaft directly, thats how on idle you still get the prop moving.