[GCncsuHD]

I would avoid the air shocks, they do not ride good, and tend to leak down regularly.

You would be better off swapping to one ton coils up front, they should give a slight lift over your 3/4 ton coils, maybe 1-2"

If you really wanted to do it right, you can swap out to the correct ball joints and run lift spindles for an 88-98 model 2wd truck, and while you are at it swap to discs up front. This will give you 3-4" and ride better than the one ton coils, you could add the coils as well though for 4-5". The back is another issue, you could either run taller lift coils or even airbags out back for lift, but as you lift the rear, it will move in an arc towards the front of the truck, causing your rear axle to not be centered in the wheel arch, though if you only go a couple inches it shouldn't be noticeable. You also would need to shim the axle for proper pinion angle.