This thing was just given to me.  I don't mess with jet skis but my brother does.  he said the drive pump looks ok and the crank feels fine.  The cylinders may be salvageable too, but the pistons are bad. 

I'll part it or someone can have the whole thing for $100.  I just need to keep the trailer

There's a dude on Youtube who swapped a hayabusa engine into a jetski...

I bet it jumps out the water too.  People put busa motors in a lot of stuff.  I'd like to have one in an ultra light plane

I've seen one in a smartcar and another in a tiny two seater fiat. Looks like fun. Sorry to hijack the thread.