Since I have gotten involved in Seadoo Jet Skis and have resurrected a few I am looking for suggestions for the next level from the GTX 787s I have. Requirements, more power (130hp), good reliability, and not too expensive to maintain (parts and such). I'd like to keep it simple. I would like to know what type/model to keep on my radar. Can a simple engine swap upgrade a 1997 GTX?