Yep, that should be a single piston caliper. Probably the same as for the 1 ton. Should use a couple of bolts to mount also. Check the width of the 1984 Chevy C20 rotor as compared to the 1984 Ford rotor you are going to use. Also, compare the diameters of the rotors. If they are within fractions of an inch of each other, the caliper should work fine. If you can't find that info, I can do it on Monday.
