My opinion, kits won't help ya, the cyls won't clean up the pits with honing. New ones are around, expensive and two each side in back!
Fronts are same as rear of a 3/4 ton or maybe one-ton and easier to find at vendors, try Chevy Duty for those. Get shoes re-lined at local brake supply house if you have one, cheaper and very few people will have new shoes. Bow Tie Bits is good source for some items for big trucks. A line blown is my First item to look for, these rust easy, when setting around in grass for years. Start there, fill MC and pump while you look around for leaking spots. Hydro-vacs you can't do much with, no kits for them. Usually need to replace with another unit. Have Fun! Don't be in a Hurry to get these done, it's gonna take awhile!
