Widen your search to 1/2, 3/4 and 1 ton, 55.2 thru 59 Chevy and GMC. They all use the same parts.
Make sure the caster shims are installed between the axle and the springs. Driving without them will result in "all over the road" steering. Driving with them in backwards will result in all over the county steering.
'57 GMC 102, Original 347 V8, HydraMatic, 3.08 rear gear, added A/C, disk front brakes, HEI, AFB carb, '98 Honda Black Currant paint. T-boned and totaled 10/12
'52 GMC 152 Stake Bed, Original 228, SM420, added A/C, HEI, disk front brakes, '67 Chev 3.55 rear gear. Gets used as a real truck.
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