If there is an oldtime automotive machine shop in your area, check to see if maybe they've still got a reground shaft in stock. Some of the machine shops where I've worked never discarded anything, even if it was many years obsolete. There are usually several 235/261 cranks on Ebay, but the shipping cost on something that big and heavy can get pretty steep.
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!