I wanted to lift my truck, but spend too much time towing to even consider a standard lift. What I did almost 2 years ago, has worked out well for me.
I did the Bilstein 5100 shocks on the front, using the stock coils and set to their highest setting, which is 2" above stock.
On the rear, I did an add-a-leaf kit and used bilstein 5100s which raised my rear about 1.5" (the add-a-leaf is required to raise the truck's rear, but could use blocks for softer ride while unloaded)
This will keep the truck with a slight rake for towing, increase your payload capacity by 750 lbs, and kill trailer sway completely (I tow 5 - 6K regularly). I stuffed Cooper AT3 under it, in 265/70R18, on my stock rims and only have a very slight rub at full locker (not even enough to leave visible distress at 40K with these tires). I had purchased 2" wheel spacers to use with it for a sexier look, but the truck wasn't even driveable when turning. I sent them back for 1.25" spacers, which will fit, but I tow so much I rather not change the offset.
I wanted to keep good fuel economy, which is why I didn't buy a wider tire, nor did I get E rated tires for the same reason. I did tune the truck from GDE and average a best of 34 MPG per tank and 28 - 29 mpg with mixed driving average. Haven't deleted any emissions equipment, but it is on my list of to do.
Bang for buck, if you can do the install yourself, it is cheaper, and it improves suspension performance; unlike standard block leveling/ lift kits. With the size of my boat/ trailer, it was a must for me to be able to control the load at speed, and I would recommend this setup for anyone who tows a lot, doesn't like trailer sway while towing, and wants a slightly higher look. In total, my clearance is around 3.5" - 4" over stock; 2" bigger tires (32.6") and 2" lift. I hope this helps someone who was looking for the same thing as me, without having to do all of the research.
