I know this an older post, but I was reading through it and thought I would chime in on the air bag comments. I am a big believer in the Air Lift load levelling air bags. I have had a set on the last three trucks I've owned as well as a few of our company trucks. The bags make a huge difference when towing, especially when towing heavy or tongue heavy loads. It's nice being able to level your truck and increase your stopping ability, and with the in cab controller it makes them totally hassle free to air up or down. Just my 2 cents.
If anyone is interested I'm pretty sure I have an extra set that fits most 1/2 ton trucks except the 04 and up fords.
"Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming --WOW--What a Ride!!!"