How about a thin retainer plate bolted over the outside, like the 18 wheeler U joints use? Even if the yoke had to be milled down a few thousandths to keep the width the same as original? That would also retain some lubricant in the needle bearings better.
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!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!