Actually I just had a brainstorm. Just JB Weld the bastard. I've heard extremely good thing about the stuff being used to repair smashed tranny pans and other metal parts. Its made specifically to bond metal to metal. Just put some over the hole, or if its too big, glue a little metal patch over it. You wont even have to take it out of the vehicle for that. That's deffinately what I'd do.