[markjohnson]

A good automotive speedometer shop that can make you a cable for that to connect to a Corvette or MSD distributor. A couple years back, I had a custom length cable made up with special ends for my application by a shop named California Speedometer Repair/Service . . . something like that. The fellow was pretty sharp with this stuff. Send him a picture of the ends you need and the length and he custom makes them up for a reasonable price.