As my '79 W72 car's body shell will eventually make its way on the rotiseree, am going to run either an epoxy primer or a P0R-15 like product in the Fisher top cavity while the shell is fully braced & upside down. Next, my plan is to shoot a low expansion rate foam product in the cavity to fill it with a close cell foam which will add considerable strength. First witnessed a body shop in Dallas using an expanding foam product for this exact procedure on a Fisher top T/A in the late 90's.
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Buzzards gotta eat... same as worms.
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