I saw one where the guy welded an exhaust clamp to a pair of vise grips.
The bent sheet metal part was on one side and the "bolt" was on the other.
The "bolt" radius fit down inside the sheetmetal part when closed.
Basically take the bolt out and flip it over and try to put it back together,then weld to vise grips.
Best I can descibe it,cant find the pics and it did work.