Pondering the thought still
Thanks for all the input guys. Looking at the situation it still makes sense for me to keep driving the beater back and forth to work. The beater is and automatic, total investment into it is $400. 00, it only costs me about $200. 00/year to insure it and it gets 27mpg.
These are what I call "senseless" miles and there's no reason to put those miles on the big Dodge and watch it's value plummet just to get to and from work and also parking it at the airport for days on end.
Archer2500 -> I've got every receipt for fuel since I bought the truck and I note the odometer reading, the trip meter reading for that tank and what the overhead said for my average MPG for that tank on each receipt. On the highway my best with summer fuel was in the high 18s on the highway. My worst tank driving strickly back roads and no highway was 16. 5. After the "white smoke" reflash it made just a little difference in MPG but it corrected the overhead reading and it's more accurate. Can't complain about effieiency at all.
Moolie -> It's and 04. 5 built in March of 04 and I took delivery in April of 04. She's in perfect condition. Not one scratch, not one ping or dent. It looks like it just rolled off the showroom floor. It's never even seen a salty road. I even keep the used oil filters and mark when it was changed if there was ever a question about warranty.

Yes I'm anal about how I analyze things, but I guess that's my machine tool back ground peeking out.
DWeiler -> Need to see some pictures of your rig sounds awesome
I've looked at the local population of trucks that are about the same as mine. You know 4x4 2500 or 3500 diesel Quad cab and about the same mileage and the lowest asking price I've seen is about $33,000-$34,000. I'm not trying to sell myself short but if I got $30,000 for it I'd be very happy.
I think I'm going to try and sell it. If it goes for a reasonable price then I'll let her go. If the market can't pull what I want then she's a keeper.
Jay R.