if i remeber correct all you need to do is get later model hubs so you can bolt up fj rotors with ifs calipers or standard solid rotors. if you want to save some money and still get better brakes go with cross drilled and slotted rotors from lc engineering. i have them on my rig with 37's and they stop on a dime and the get less heat fade than my buddies truck with the fj vented setup.
