[LILRED66]

tapeworm:

The top coil retaining cups do not have a weld nut on them. The weld nut is on the top side of the lower frame flange and the bolt goes through the retainer cup, into the weld nut from inside the coil. Getting the bolt in from the top and tightening it, if there was a weld nut in the cup, would be very difficult.

The bottom coil retaining cups have a weld nut. The bolt goes through the pocket in the trailing arm and into the bottom coil retainer cup with the weld nut on it. Inserting and tightening the bolt from the underside of the trailing arm, into the cup, is easier than from the top, inside the coil.