I ran into one recently that was Made in Mexico that worked still but only slightly larger than the new one.
The bolt just being long enough. I`d think this would work...classicparts.com/chevy-gmc/truck-parts/1934-1946-truck-parts/engine/ignition-system/1941-76-ignition-coil-12-volt

~ BD.
"You won't find me in an old folks home" Pioneer Florida Cracker
1958 Apache Stepside
1958 Apache 1/2 ton Panel
1959 Apache 1/2 ton Panel