Re: caliper/rotor questions...
Are they 5 lug or 6 lug rotors? 5 lug you can buy any 1.25" thick C10 from '73-'87 (around '80 they offered a 1" version, you want the 1.25" thick ones). If they are 6 lug, you will have to buy them from a vendor like Classic Enterprise, CPP and such as GM never offered that era C10 in 6 lug and they are custom made for the vendors.
As for calipers, again any '73-'87 ones for the 1.25" thick rotors. These are commonly known as D52 style calipers. They do not matter if 5 or 6 lug rotors.
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