I have a 64 falcon ranchero and need to replace the rear spring bushings etc. I need to remove the spring perch bracket that attaches to the frame at the top of the rear spring shackle to get the bolts out because it is too close to the gas tank.

The bolts that go through the upper shackle plate to the frame member is in a boxed unit. Does anyone know if the nuts are captured or welded in place. I'd hate to get them loose or out and not be able to get to the top to put a wrench on them and retighten?!