The "R" in 909052R and 909067R specify a ROLLER type aftermarket bearing. The original parts were BALL type bearings with numbers of 909052 and 909067. Nothing wrong with either type as long as you use the proper adjustment procedure for the bearing type.
'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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