How would an AD body fit onto a task force frame? Basically, would a 50 -54 body fit onto a 56-59 frame fairly easily? Seems like maybe an easy "upgrade". You would get better 6 cylinder engine and open driveline and Bendix brakes.
It is easy enough to do the Bendix upgrades, and the improved full pressure, inert bearing engine swap on an AD chassis. The Task Force truck drive train is not a vast improvement over a '54 AD, not to mention the front wheels will hit the front fenders. ( I guess I just did mention it, but nevertheless...)
1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission
From diagrams: 1956 front 60.52" 1954 front 57.03"
60.52-57.03 = 3.49" Divided by 2 = 1.745"
The edge of the tire is 1 3/4" closer to the fender. Appearance wise it is a little noticeable.
Turn steering wheel to maximum left (as an example). Now hit a pot hole where the front axle goes up. The problem can be worse if you are running wider modern tires.
"Adding CFM to a truck will only help at engine speeds you don't want to use." "I found there was nothing to gain beyond 400 CFM."