HARDTRAILZ wrote:Possible but without skids or winch or bumper up front you may bind. I had no bind issues w 3 inch spacers and 88s and 3 inch body lift even though the body lift has zero bearing on suspension. I do have a bit of armor n such though.
As long as he has the MarkMC 3" lift, and as long as the MarkMC 3" lift is designed properly, spring rate shouldn't affect CV binding no matter what spring he chooses. 89s may affect longevity of the shock, and he may top out all the time - which are major problems themselves. However 89s shouldn't affect binding of the CV since the max articulation angle of the suspension is dictated by the lift block alone. Spring rate has no bearing on the unloaded suspension/max droop angle, it only affects the loaded suspension CV angle.
I wouldn't use 89 springs with any lift, there have been a few shock failures from that. I had good luck with 87s on a 2" lift for a while, but I don't have any reference to what spring is best with the 3".