Hell, you can lay frame. But really, you can adjust the bags to ride at a good ride height. They are very adjustable, in that you can set it to ride lower than right height and it will not be rough. It really depends on how much you want to spend though. Good Luck with your mods.
Depending on what your back spacing is? 255x20's that is a tall tire. For the front you can tuck about 1/4 of the tire. In the back it will tuck about the same. And that is taking out the bump stops. If you want to go really low you have to cut the wheel wells in the front out. and the back you will have to notch the frame and raise the wheel wells. I did start on that and it got jacked up. Let someone else do the work. I am now doing all the work myself. Live and learn.
I'm just now reading up on how bags work and what I'll need for my truck. First is there a good site where I can read up on bags info?
Second how much am I looking to spend on a complete kit? Just curious now so I can start saving for it. Also I'm looking for a remote switch where I can set the alarm and the truck drops as low as possible. I want to lay frame if possible. Then when I unlock the truck it raises to a height which I can drive.
I have the AirRide Technologies kit of the front of my truck. Its a decent kit, but it requires you to cut a significant amount of metal out of the frame, where the coils go, for clearance for the bags. If you cut the fender wells out and make a little knotch for the control arms your truck will lay on the crossmember with this kit.
In the rear of new gen dakota's you have to narrow the rear end to lay it down low. I have 245/45/17's on R/T wheels with a 7" drop and the rear tires are CONSTANTLY rubbing on the lips. Unless you get pretty crazy offset, if you want to go really low I would deffinately reccomend narrowing the rear end.