Centering wheels in wheelwells

[coreyjhen]

I was contemplating our trucks recently (kind of like navel contemplation for the middle-aged), and it occurred to me that the front wheels are aft of center in the front wheel arches, and the rear wheels are forward of center in theirs. It almost looks like the body was designed for a chassis that was a couple of inches longer. Will doing the infamous caster mod move the front wheels forward, and lowering move the rear wheels rearward, appreciably?