OUCH! You could drill and tap for a bigger thread, and then make a special bolt for it, or Heli-Coil the hole back to original size. I think I'd make an effort to salvage the current part unless there's a lot of wear where the pivot shaft goes through the carrier. If the pivot shaft hole is egg-shaped and the pin is able to move in the carrier, that's what usually breaks the lock pin. Running a shift kit in an automatic transmission usually results in a worn out spider gear pivot shaft hole.
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!