I decided to replace the positive battery cable/clamp on my '51 3100, the Blue Funk.
Went to my FLAPS NAPA. Catalog showed a replacement, yet they could not locate one.
Went to a Farm & Home and they had one on the shelves, for tractors, cable and clamp plus an extra wire I use for my Battery Tender, for about $23! Fits and works perfectly!
Made by Uriah: 2 awg Battery Cable 38" long part #UV001740