[3W Hank]

The belts that was used ex 78-8620-A is little over 5/8”, but when did the smaller belts came into US production, like we see on cars from the 60’s and 0.44” wide.
In my case if those belts would work in the wider grooves and is ’time correct’ etc early 50’s it save me some space vs the 59 pumps and the 8 camcover.
Ideas.