Re: Posi rear differential factory option?
Grumpy, thanks for the picture, I've been looking high and low for the plug tag, any suggestions??
great thread guys, love all the info
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Gerry, North Bay Ontario
1971 Chevy K10 short stepper, 518 med green & white
1972 GMC C1500 long box, dark Brown, owned since 1977
1969 GMC C2500 manual
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