Yes all vehicles have a little difference usually around a 1/2 inch or so.I just wasn't sure what it was on my Suburban. Wanted to check rearend alignment because it felt like it was tracking crooked.
a 2001 Suburban has a solid rear axle, not independent, and there are no adjustments to the rearend alignment. is this vehicle new to you or you hit something to account for what you are trying to do?