Stout looking chassis with nicely executed details.
I like to give constructive criticism, and you asked, so don't take this the wrong way.
On the AC, do it, but I would have put the stereo somewhere else than under the drip pan. Just saying, why risk it?
The tire to main rail clearance looks fine, but the rub rail looks to my eye to be a little far out. I am getting the feeling that you think so too. Now is the time to fix it if you want to. It might seem like a big step backward and a lot of work, but it will be done before you know it and it will bug you forever if you don't take care of it now. Spend a day and tuck those rails in a bit more and you will be much happier in the end.
I know that is not what you wanted to hear, but on the other hand I think that is what you did want to hear!
