You say 4400 which is about 161" wheel base. Looks like might be a 137" wheelbase 4100?
Or with the heavy front axle it might be a 6100.

Not that it matters, you have the 2 ton axle and can swap spindles and brakes if you want.

Grigg


1951 GMC 250 in the Project Journals
1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
1952 Chevrolet 3800 pickup
---All pictures---
"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-