The rear is okay.

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."