trying to figure out what to order here for my lift... my thoughts are 4" EZ rides up front with 0-rates for 5.. i figured i want an extra inch in back to help out any eventual sag issue. so i'm looking at 6" in back or so. my initial thought was a flip for 4" and 2" lift springs.. not as simple as i thought. they are available in 52", but apparently not 2" in 56". figure if i'm back there might as well move the flip back and go 56" as opposed to 52.. are these available? TC and BDS don't seem to make em..