I recall it being just a thread, and after seeing it I did some research on switch options and bought a starter switch at NAPA to do the same.
In my estimation NAPA number ST6 being the best option.

https://www.stovebolt.com/ubbthreads/ubbthreads.php/topics/1139884/faux_stomp_starter.html


•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-