This is a Stewart Warner distributor mount tach drive model 659. It's usable in clockwise and counter clockwise rotation and are fairly easy to modify for whatever engine you desire. This one I believe is set up for a Banger engine. As it came in a collection of banger parts. But no promises on that. I've seen these used in GM straight sixes, fords, and in studebaker stationary engines from war time. $500 plus shipping.
The Jalopy Journal
