Al, We talked some when you where in Omaha. I don't know if you have heard of Larry Demers or not. Builds a truck load of race motors and races top sportsman in Div.5 won Brainard last year blah blah blah. Any way he has done a few predator motors and may have some ideas on what would be better than "stock". May be worth a call. 800-522-1940. Take care.