i have not done one on a 4runner, but have on a blazer, lol. I see you havent gottin much help so i'll throw some info out. Brake lines are not effected, they are on the frame. Any other corrections such as steering, gas filler hose, etc. will be listed in the contents of the purchase from the company. In my years of researching 4x4 stuff i have found that 2'' BL go much easier and fullproof than 3'' BL.
Hope this helps a bit.
-Dave