The problem with welding it is its Cast.. so the metal has to be heated before you weld it.

The problem with Jb weld is it has to be oil free for 24hrs while it dries. even if you drain the tranny and put the jb weld on there will still be ATF in there to seep out.

The problem with getting a new tranny or new case is well Thats the right way to do it.. and as we all know this is TR. not many people do shit right.