I have been looking for a blazer with a 6.2L diesel but have had no luck so i am going to settle for a 350. I found a guy with a 85 K5 that has an 87 bottom end and throttle body and he said he'd sell it to me for $800. Looks like its been sitting for a while, interior is torn out but he has all of it he claims. Says it runs great but needs new rear shoes and drums. My question is what vehicle do I order the brake parts for since he put a 3/4 ton chevy rear end on it? Just a 3/4 ton pickup? Also how much work is involved when replacing these parts, I have never done drum brakes only disc. The truck also has a 6'' susp. lift and 4'' bl with 35'' mud terrains. Does this sound like a deal for $800 if it runs great and only needs brakes? Thanks!