So I am hoping for some ideas of what could cause this and perhaps some ideas of what to look for.

I found out tonight that from the center of the front center cap to the center of the back center cap I measured 102" on the left side and 101" on the right side.

This leads me to believe that the left side is pushed forward upwards of 1 inch. What could cause this? I know perhaps bent subframe or lower control arms.

Anything else?

 

I know there are a few things that work in conjunction on these puppies.... especially because of the solid front axle.
I would check not just for bent components like your upper and lower control arms, but also look at the condition of the bushings in them. If they've started to deteriorate I could see that as a possibility. Hell, check all your linkage bushings while you're under it. Also check and make sure you don't have anything loose in the shocks/mounts.
Some can chime in an correct me if I'm wrong...but I don't think your trackbar would have anything to do with it as that centers the axle under the body side to side..not front to back I believe. Just thinking of what else you could check. Obviously making sure nothing is bent. But first I'd be putting a close eye on the upper and lower control arms and their bushings.
Obviously more can articulate upfront, but if for some reason you can't see anything wrong, check the back too. Obviously there's a bit of twist happening somewhere with that kind of measurement.