The 897125 number Dan lists above is also valid for 55.2 and 56 GMC trucks with class B turn signals (ie. 6 wire switch). In '57 Chevy and GMC went to a dished steering wheel and the turn signal lever followed the dish, so the part that the lever screwed into was modified to include the angle of the dish.
'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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