Found a Source for 10” rear drums with 1-3/4” shoe

This company has them listed. Pretty pricy but if you need them. Would suggest you call to verify I called them awhile back, but I don't remember whether for front or back. Their website said "in stock" but they weren't.
https://www.vividracing.com/centric-ctek-standard-brake-drum-12363044-p-153962507.htmlNOT IN STOCK