I have heard of 64 GP's with a factory Dual Coupling, but I have not seen it myself.
Has anyone actually seen one??
The GP always had a higher model # than a Bonneville. From 62-64, a Bonneville was model 28 and a GP was 29. From 65 to at least 68, Bonneville was 62 and GP was 66, if that actually means something.
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The difference between inlaws and outlaws? Outlaws are wanted
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