You shouldn’t need two inches of clearance to clear a tire that’s two inches bigger. The tire is round and extends out from the center so one inch on each side. Only need one inch of clearance for the bumper.
Am I right with that thinking?
That's normal. My build sheet didn't show up until after it was built. It seems that the build process itself goes pretty fast once it starts. One day mine was scheduled for being built and the next day it was done.
I’m going to assume that in the case of the XR, for optional equipment you need to take the XR package options into consideration. I’d imagine it would go into that status for the tailgate reinforcement at least.