72 Scamp Rear Leave Spring bracket removal help / suggestions?

I'm wanting to install a set of new Mancini #002 &003 old school S/S springs with new shackle assys. I looked at the rear shackle bracket mount which is bolted to the rear body panel. I have no idea how to access the backside. I see two fastener bolts. Is there nuts on the backside? or welded and tapped factory threaded blocks? at this point,.. I don't want to screw it up with out looking at a 72 body service manual, or asking for help here from anyone who had the same issue.
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72 Scamp Rear Leave Spring bracket removal help / suggestions?
Author: HotRod20