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burnin oil · 03-12-2015, 12:52 PM

I always get asked about the exhaust brake switch on the shifter. This thing have a 2 spd rear?

03-12-2015, 12:52 PM	#27
burnin oil Registered User Join Date: Jan 2013 Location: Eastern TN Posts: 1,921	Re: 77 gmc c35 dually 4-53t detroit I always get asked about the exhaust brake switch on the shifter. This thing have a 2 spd rear?