[63gmc4x4]

Originally Posted by gmcjuniorvan

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For the rear brake drums I used Centric Part 123.66003 they have fins and fit over the backing plate and still fit the stock rims. Just drill out the stud holes to 9/16. No need to open up the center hole.

I would like to see these measurements as compared to the original drums, that centric part number crosses yo an71 k10 I have a 71 and I tried this drum and it still was different