Does that long bed truck have a torque tube with two torque tube balls (u-joint housings)?
If so, I would be interested in finding out if the torque tubes of the long bed and short bed GMC's were the same part, but the long bed came with the extra torque tube ball assembly to make up the difference in length.
Carl



1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission