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Old 04-06-2010, 09:44 AM   #3
N2TRUX
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Join Date: Mar 2000
Location: Cypress, TX
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Re: C-10 v. C-20 frame

Keith I am no 67-72 expert. but I can tell you this seems to be a common problem. I don't think it matters if it's C-10 or C-20, there was just a lot of variance in the rear frames. I'll take a guess and say it may have had something to do with the plant they were manufactured at, but that just a guess.
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