Brake Drum Width?

Axles are Yukon 4.5 patten, green bearing. The drum fits all the way up to the axle flange. Drum ID measures 2.25". The shoes measure 1.75". I picked all this stuff up separately, with long intervals in between and I must have miss matched somewhere. I would like to put about what would come on a 69 GTS, What do I need to make my stuff match up?