[BIG BLOCK JIMMY]

Thank you for your response!
I just checked that again and they are correct. The cause of it is the front axle assembly is further forward on the driver's side than the passenger side. The only thing I can think of is the frame is bent....I don't even want to think that, let alone type it!
All other measurements appear correct. So other than the horrible thought above, what would cause the axle to be out of square?
I know it's out of alignment, because of the way it drives, but I have a header situation to figure out before I can drive it again and take it to get checked out. I don't think that could/would cause this, but I'm grasping at anything.