Re: I'm going nuts over lug nuts!
BigD is correct. When GM went to disc brakes on 3/4T they changed to 9/16. I would say the rear end is still a 1970 with the 1/2inch lugs.
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67 C-20 LWB, tilt, speed alert,
vac, 454, T400
67 C-10 SWB, factory air with
more to follow
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