Stock Chevrolet Rim Size

[landy]

I didn't find much here using the search function, but did do some more reading and searching. Since I'm wanting to go with the stock steel wheel look, 15 in rims are the best choice.

Is there any difference in the stock rim specs (width, backspacing, etc.)between the 2wd and 4x4s? There must be lots of used 15 in rims available at salvage yards given the sheer number of Chevy 1/2 tons made over the years.