hey guys i have a 1988 argo magnum 8x8 with a 18hp kohler .there is nothing wrong with the engine it just does not cool the engine shrouds where damaged and removed. so i got a hell of a deal on a briggs 18hp the only problem is the shaft it is a 3/4 in shaft with 3/4 in pipe threads on the end my clutch is for a 1 in shaft can i just get a stub shaft made that goes from 3/4 to 1 in with a key way in the end or what do some of you guys suggest