Originally Posted by theedgeofsanity
if i remember correctly, the square bolts are threaded directly into the frame and the nut on the back is welded or something to the frame. you shouldn't need to clamp it.
I think the mounting bolts screw into clip nuts attached to the radiator core support. I'll take a look at mine when I get a chance -- tonight if I remember.
If the clip nut rusts on to the bolt, torquing the bolt hard enough to break the clip ears off (where they wrap around the edge of the core support) can allow the whole thing to just turn round and round in the hole, and never unscrew. Will take a look at mine and see.