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WTB Speedometer ratio box
My 72 GMC 3/4 ton 4x4 is missing the speedometer ratio box. The gear ratio in my truck is 4.56. Any help will be greatly appreciated. Thanks in advance.
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'69 3/4 ton 427 CST Pickup
'71 CST Blazer
'72 GMC 3/4 4x4
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