The 3 speed transmission with column shift was standard equipment on the 3/4 ton.
I believe the 1/2 and 3/4 ton 3 speeds are the same.
The U-joints are different, however and I think the rear bearing retainer is different on the 3/4 ton.
At the very least you would need a 3/4 ton 3 speed U-joint.



Steve

'49 3800
'52 3600
'57 3100