32" tires, and 3.38 gears? No wonder your truck isn't performing the way you desire. You need gears in the neighborhood of 4.11 with 32"tires with that transmission.
I would be shocked if a Carter fixed your problem. You are asking too much for a single barrel carburetor to do IMHO.
There is another famous saying. "Its never the carburetor."
Carl

1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission