ok from my other post i have just fitted +2" rough country shocks to the old girl and want to get new rear springs should i get the 20% stiffer springs from millers or go for standard springs i dont want the rear to feel to harsh but i have asked 1 motor factor near me for some springs and there is only 1 spring listed for both swb and lwb 1 have lwb but have heard that the miller springs on a swb gives 1.5" lift but makes it harsh so will it be harsh on a lwb