I'm needing new rear shocks for my Titan, and wanted to go with either Fox or King rear shocks. And will be leveling the rear soon so will need to get shocks that fit a 4" to 6" lift for rear. Either 2.0 remote reservoir or Piggy Back idk whats better??? As for which are the ones for the Titan i cant seem to find the right ones? or can i just buy any Fox 2.0 remote reservoir that measure a 4 to 6 lift and just slap them right in? Thanx for your guy's help.