I have a 1992 gator 6x4 and the Kawasaki engine finally died. I would like to replace it with a Honda gx690 or gx660 but i can not find out the flywheel shaft size until i pull it off motor. i was told the 630 works but i want a larger engine the shaft on the kaw is 11/8 in. and the honda is also any comments on this??