I was digging through my assortment of jet skis because I needed a single carb rotary valve cover for the 717. The engine was in the ski upside down and when I turned it over look what I found. LOL Nice looking head. I dunno why people waste money on this kinda stuff and I am always tempted to use the parts but... I'm getting a pile of performnce parts people spent big money on to modify their skis. When I restore a ski.. nobody cares about a performance part on there. I'm also not gonna lie to them and tell them it makes a big difference in power. Generally one performance part only makes a difference when it is paired with other performance parts. Looks cool though. Ha ha.