Very cool Pasquale, this will be a good place to collect thoughts and ideas. I do plan on taking the rear suspension apart on the Tacoma while I have the 4Runner. I have a new set of custom 11 leaf Deavers being built, which will include their new Baja bushings, which is essentially a spherical joint replacement for rubber bushings, allowing the axle to flex without putting rotational stress on the leaves. I also plan on including a set of Downey shackles too. For shocks, I will be upgrading to the new Donahoe remotes with 2" body.
The goal with my airbag set-up is three fold:
1. Allow variable load control (i.e. soft when empty and maintain control and ride height while loaded)
2. Allow variable height: With the low hanging fuel tank, I want to be able to lift the rear up to 5" over static ride height.
3. Camp leveling: I want to be able to level the truck when I get into camp front to back and side to side.
My greatest concern is air leaks, so I am looking for an ultra reliable set-up. Have not found it yet
I will start the planning process in earnest when I get back from Seattle.