i'm working on a 63 c10 short bed fleetside i bought without engine or transmission. the steering column was in the bed, along with a steering shaft.. it was originally a three on the tree. the po had started a "resto" that included a powerglide the tunnel was already "chopped up" i put a muncie m20 in it. i took apart the column and swapped the steering shafts since there was quite a groove in the one. everything came apart and went back together easily. i installed it and left the wheel off since i was rewiring the truck. (witch is an entirely different, frustrating, story still giving me fits). i put the wheel on to finish the horn and there was a bout a 2 inch gap between the bottom of the wheel and the turn signal cup. i checked everything i could think of and asked on this site what the length of the shaft was. mine is the same as your 65's. i loosened /removed mounting screws and pulled the jacket up to the wheel it looked perfect except where the mounting screws go into the jacket are up past the dash! i'm thinking they either changed the length of the shaft between 63 and 65 or i am missing some adjustment procedure.
