Gimmie a Brake HELP

The OE '72 & down 10" shoes were 1.75" wide, all the other 10" shoes including '73 and up A-bodies are 2.5" wide. Looking at that pic, You may get away with just getting
the 10X2.5 drums and installing them, You would just have less swept area than the drums were capable of. The backing plates & shoes for 10X2.5's should be easy to come
up with. They were used a lot & forever................................Yeah I'd check the tire to quarter lip for sure, if They've added that much to the axle length.........