Get someone to drill and tap the corner bolt hole for a HeliCoil. It's a spring steel thread insert that's turned into an oversized hole and you end up with a stronger thread than original. It might even be possible to do it with the pan in place with the right tooling.
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!