if i were you ads i'd ask to see the damaged parts and also question them about teeth which came off the cam pulley. if the belt snaps, then i doubt the pulley would be damaged as its relieved of any strain! unless the pulley was loose and snagged at an angle - causing the whole scenario!? Will just thinkin', maybe the rockers run directly off the cam shaft, so that the cam can sit lower in the engine, thus making the engine shorter? only thing i can think of!