ok maybe only 500
i doubt they will make one. they don't really make commercial ztr engines yet so i would think that would be their first step. they were making semi-commercial engines like for the hustler fast trak super duty and such. i don't know if they still do or not. they make every other kind of engine so a ztr engine seems like it would be their first thing to do. seems to me they could make a better engine than kawi, kohler, or vanguard, or whoever. i've always wondered why they don't do it? would probably run smoother, last longer, and get better gas mileage too.