Re: Posi rear differential factory option?
according to the 1972 Truck Price and Facts book, the K10 with 350 engine came with standard 3:07, optional 3:73 and that's all. Perhaps "special order" one could get other gears
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'72 C10 Cheyenne SWB North Carolina truck for 50 years, 72k original miles, Medium/Hawaiian Blue, 3 owners - one for 40 years, garaged kept, original: sheetmetal, undercarriage, moldings, glass
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New - engine rebuild at 65k in 2015, one repaint in 2010, new front bumper, houndstooth seat, carpet, 8 inch rally wheels on 275-60R-15, LED lighting. - Semper Paratus!
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