Its for Drive Your Tractor to school day. I know that it sound crazy but its only a temporary thing. I'm switching the pulleys back to stock after the event. Plus I have a second rear differential for it. I got it awhile back.
haha I like those tractors, but put a bigger 5" or 6" engine pulley on and see how it goes, not sure what will fit up there after you get the pto clear etc. Probably have to get a different belt, report results.