I would like to go with a 2" (maximum) suspension lift for my 2010 4R, SR5 4x4. Since I live in Pittsburgh, they are OVERKILL with the road salt in the winter, so I need shock components that won't rust or pit. I will stay with the 17" x 7.5" FJ wheels and LT tires in 265/70/17 size, so I don't want/need new upper control arms. Will the King or Overland kits be OK, or are they going to be ruined by the road salt ? Should I be considering the adjustable Bilsteins, and 4 new coilsprings (what brand/size) ? Or, would Old Man Emu coilovers be more corrosion resistant ? I don't want to spend $1500 + on a quality 2" suspension lift and have the shaft and/or body of the shock rust & pit. Thanks in advance.