Did you try to remove the front torque tube bushing?
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You might not need bushing puller tool. Source for Okie Bushing.
http://www.vapinc.com/ Their
Driveshaft Bushings and Seal Assemblies page.
Looks like their Okie bushing, oil seal & sleeve assembly. Only go back to 1940.
But they have Driveshaft Bushings for 1937-39 1/2 Ton.
You'll have to inquire. to see if they make a Okie for your year.
1929 - 1957 Chevrolet Master Parts & Accessories Catalog Group number 5.451 Bushings
37-50 Front Bushing is
NA O.D. Slip Fit part #595007 and probably doweled.
37-39 Rear Bushing is
1 17/32" O.D. part #595005, Close to Chevs of the 40's Item # 595005B 37-39
So that means the Okie sleeve O.D. should be around
1 17/32" My hunch is the vapinc.com 1940-50, pass. cars & 1/2 ton PU
V-102 will work in your truck.
Also check out
This Okie bushing photo album and instructions on page 2.
Do to the slight variations of the inside dimensions of the torque tubes.
You may have to dowel the Okie Bushing outer sleeve if it is not sufficiently tight, to keep it from turning inside the torque tube.
Sometimes the slight variations make them to tight and are hard to slide into the torque tubes.
Let us know how it goes.