You've probably got 18" tube-type tires on it now, right? Even if the 8-lug bolt pattern matches up, it takes a tubeless tire wheel of 19.5" or bigger to clear the rear brake drums. My 59 model 3800 would accept 16" drop-center (tubeless) wheels on the front hubs because it had a spacer built in for the correct track width, but the inner wheel wouldn't go over the rear brake drum.
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
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