03-31-2017, 08:51 PM
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Join Date: Mar 2017
Location: ABQ, New Mexico
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I am going to take a "wild ass guess" and say they are part of the Flush-and-Dry rocker panel system that Chevy advertised for the 1968 Nova. Maybe they enclose certain holes in the frame that would not allow the F-&-D system to work. Like I said - just a guess - nothing more.
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