Thanks guys! I'm in Zephyr, and I ordered a Pop Up from Tweety's in Bulverde. You can dowload the installation instructions prior to purchase and make sure you have the necessary tools and equipment on hand.
Pretty nifty, and the installation should take two hours or less, so I'm gonna park under the shade tree and save as much as $350 compared to some of the Dodge and RV Dealer quotes I got.