There are two variants of speedometer for miles per hour and kilometers per hour with "1210 revs per mile" and "1610 revs per mile" marked on the rear of the speedo. Then there are four right-angle adapters with two cable styles. Early drives are usually Veglia-Borletti while later ones are VDO. Either comes in a 1:1 or 1.11:1 ratio stamped on the drive.
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