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Old 03-10-2019, 09:47 PM
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Very nice...........thanks for the pictures.

We know that the early assembly line mounts had part number 3937930 on them only, mounts were available with both 3937930 & 3920627 part numbers on them and mounts with part number 3920627 only.

It appears that the part numbers on the mounts went through a transition period from the 3937930 to 3920627 mount. It implies that when GM released a newer version of the 3937930 mount they placed both part numbers; original 3937930 and the revised number 3920627 on the mount for a period of time which eventually lead to the mount being available with part number 3920627 only until it was discontinued on 4/70.

Any thoughts.....?
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