I have a Fj cruiser with a 3" lift and 35"s and a long travel set up in the rear. I refuse to spend any money on the front suspension so i can save up for doing a sas with the intention of doing all the engineering myself and having. A friend do the welding but now that all pro has a pre done kit I was gonna go that root considering my skills aren't adequate for a daily driver. So I think you can set it up from 4" to I think 6" or 7" so could i keep my rear lift with a 1.5" spacer for a little while and rock a 4" lift up front then considering the kit moves the front axle 2"s forward could i with decent trimming fit 36" to 37" tires. Lastly i don't care much about the look of my rig and will take drastic surgical steps i Drive it daily but its for wheeling and will buy another car soon.

 

You might find more info on the FJ Cruiser Forum. Sounds like a fun project. Hope ya git er done.