I'm about to separate the body and frame on a 72 lemans convertible (yes I've prepared braces for it). I see there are seven body bushings per side. I only see where six have removable bolts. Do the ones above the rear frame rail area not have bolts that are to be removed? I can see the rubber, but don't see a bolt from above or below that bushing. I was thinking it has a bolt impregnated into the rubber and it screws into the nut in the body.