Well 2 of mine are stripped, both on the driver's side.

FYI, I'm crappy with a welder and the original bolt is M10 x 1.5.
http://www.vilipend.com/~frrax/slowTA/tranny_bolts_7
1- Drill and tap to accept a 7/16-14 bolt, I've heard that there is enough material left to do this but it still sounds kinda flakey to me.
2- See number 1 and loctite studs in place instead of bolts.
3- There is a hole in the frame that I might be able to use. I'm thinking of grinding out the nuts out then drilling and tapping a plate of steel. I would use the hole to slip the plate in and line it up, maybe use some double sided tape to hold it in place.
4- See number 3 and use studs instead, I 'should'

I've gotten suggestions of cutting open the frame and welding the plate/nuts in... but I'm really against that idea. I know the picture shows the bolts holding everything in, but believe me they are soft and not the right bolts.
Any suggestions?