Well, it's been awhile since I have been able to enjoy the truck, but I am back stateside, had a 2 week turn-around to come back from Afghanistan then pack and move to Colorado.
No serious mods - I just didn't have the time and now I am in a place where I can't work on the truck. On the plus side, I did a speaker upgrade to the factory system and got some serious bang-for-the-buck with the speakers. I put Kenwood Excelon KFC-XP6093C's up front, which include the 3.5" midrage speakers for the dash, and Excelon KFC-X694's for the rear. I pulled the inner door panels off and Dynamatted the door skins front at rear. I also added Dynapad to the front door skins. Install was pretty straight-forward. I put 4 ohm resistors inline with the dash speakers since the factories are 8 ohms and nearly all after-market speakers are 4 ohm. Without the resistors, the dash speakers would be noticeably louder than the door speakers.
The overall improvement in soundstage, bass, and clarity is awesome, especially for simple replacement speakers. The Dynamat made a noticeable difference in external sound mitigation (wife was the final judge on that) and the doors have a solid think when you knock on the panels.
I'm just starting to explore the local area and hope to do more once everything settles down. This past weekend I visited the Comanche National Grasslands. That road back there is about 10 miles of haul-ass goodness.