HELP! Cab mount removal.

[kballan]

Hey guys, I need some help here. I'm switching cabs on my shorty frame, and am having a hell of a time figuring out how to get my cab mounts out! They have been changed before, so the holes have already been cut in the back of the cab floor above the mounting screws - problem is, the bracket that the mounting bolt screws into snapped and is spinning with the bolt. I don't have (or know anyone) with a set of cutting torches either. I'm going to try to get my grinder in there and cut them off. If that doesn't work, I don't know what I'm gonna do! Any suggestions would be appreciated!