The 1950 4400 cab and engine compartment is the same as on a 1/2 ton to 1 pickup truck.
Those braided harnesses should be available?

The major wiring difference for your truck would be the wires to the rear lamp?

Maybe they could make a longer, braided, rear lamp wire.
Maybe slightly longer front lamp leads would also be needed?

Maybe some else can confirm this, and/or can explain other differences?