Probably need to find a truck w/o pump, probably hard to find, but newer similar truck might be the same.

Another option, depending on your proposed use might be to find a modern rear axle, 14 bolt for example, open driveline, and pick a suitable ratio, of course then one has to match the front wheel bolt pattern. Are you going to keep the original engine? 2 ton front axle can be fitted with P-30 disc brake hubs to keep a narrow axle to fit in the fenders.

Ed


'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.