Yeah, I kinda left ya'll hanging there when I ran out of time posting last night. But on to the goods.
This is the new nut I am using in the floor support and a heavy wire from a coat hanger to get it into place
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It's pretty deep in there and not much room so after cleaning out some dirt clods and the old nuts I came up with this idea.
After pulling it through I just lined up the nut with the center of the origional hole and welded it up. The heat on the nut is not much of an issue though. It's welding upside down one handed, while holding the wire steady with the other hand, then looking through the welding helmet in a cramped space and poor lighting while trying not to get burned by falling molten metal or burning through the floor support.
After the welding and gringing the surface smooth, I ran a tap through the new nut to chase the threads. They have a tendancy to shrink a lil.
Next item I tackled was test fitting the new rocker box reinforcment panel. I found that this is a nice part, however, it needed to be modified a bit to fit properly. I would venture to guess that not all these blazers are quite the same dimentions every place. This pic shows I added another hole to the side of it, so I could line up another hole better. Later I welded up the slightly larger hole and ground it smooth.