Ray,
I'd have been suprised if the speedo did actually still work nowerdays. It got filled with muddy water on many a happy jaunt when i had it!
The speedo cable gave up the fight for life early in the buggys history, as i had routed it just where passengers thought it would be a good idea to wedge their feet, so a quick reroute, a tack of weld on the inner, and the cable was good as new.
The speedo was callibrated for 185/70-13 m&s colways, running a 3.1/1 diff ratio, though this was changed to a 3.9/1 when the 1275 engine fell in.
Jerry