Many years ago I had an m38, I took the 11” brakes off an late 40s willys truck and put them on the m38 they fit fine and worked good felt like power brakes. Now I have a 62 CJ-5 which needs brakes. I do have some 10” backing plates and drums from a later jeep, the backing plates work but the drum center hole is too small roughly .010 also they have no screw holes. I can machine the center holes to fit and drill holes for the screws,but, the sidewalls of the 10” drums are thinner. Now am I just going to ruin a good set of 10” drums or might this work, any thoughts on this? BTW I havent seen 11” inch brakes advertised for years and not keen on disks. Mainly, because, I want to use 15” kelsey hayes steel rims.