You're asking your questions specific to M923A2 trucks. The truck you're getting isn't an A2.
By asking your questions specific to A2 trucks, the answers you'll get will be specific for A2 trucks. Most of the time the answers will be the same for A0/A1 trucks also, but not always.
Eventually you'll get a hold of some info specific to the A2 and attempt to apply it to your truck with bad results.
Examples where this'll bite you - cab to bed distance, spare carrier dimensions, engine, fuel tank, oil filters, fuel filters, axles, bumperettes, and hitch height. This is not an all inclusive list.
Frame height while riding on 16.00s is *not* one of the areas where the A0/A1/A2 trucks will have different answers. I'll measure mine and post up the answer when I'm back in KS next week if no one else has beat me to it by then. (Note that there'll be up to an inch or two of variation between tire manufacturers. XZLs sit a bit higher than AT3s)