I know this is a karting forum,and I hope i'm not out of line asking this here,but you guys are the experts I am planning on building a clone 4 stroke for a paramotor. The engine will be required to run at sustained high and mid rpm's and must be Reliable. My horsepower requirement is 17+ to provide enough thrust with a 51" propeller. A poly rib belt reduction will keep prop speeds at 3000 rpm so peak engine horsepower can be in the 8000 range. This has been done with some success with gx200's in Europe. I think the Predator would be an excellent platform for this. What specific parts combination would achieve this? Thanks , Jeff.