I finally arrived back in the states after a year in Afghanistan! Now I can begin trying all the tricks I read about on here instead of thinking about them.
The first thing I did to the xA when I got back was replace the evap canister to fix a emission problem. After a oil change and a very intense cleaning session, I installed the TRD lowering springs and aero spoiler that I purchased from The Scion Parts People out of Washington. I didn't do any before or after testing so I'm afraid I can't report the results to everyone.
I will get my wife to post the pictures she took later when she comes home from work. I intend to update this as I move forward. Please feel free to comment and offer suggestions.