Alright, all brake parts have arrived and look to be correct. I ended up going through RockAuto.com for shoes, master cylinder, and wheel cylinders. All four wheel cylinders are the same (Raybestos WC18009) at 1 1/8" diameter and the master cylinder (Raybestos MC21680) is 1 1/8" to match. Shoes are Centric brand (11103100). I found the drums on Summit from Centric. There was a little confusion trying to find the right p/n. In fact the p/n on the parts that arrived was ever so slightly different from what I ordered but the part appears to be the same. Fronts were 122.66027 and rears were 122.66036. The parts that arrived had the same suffix but started with 123 instead of 122.

Hope having these part numbers here helps somebody find what they need in the future and hopefully my truck will soon be one step closer the the road.