70 duster rear shackle part number options?

Give me a mailing address, I owe a Karma forward offering. One of mine off the Dart was in good shape, blasted clean and T-9'd ready to go.
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JUST Measure the diameter of the "bolts" so I can make sure my Dart's are the same as the Duster. Should be 1/2" diameter. B Bodies are 9/16.