I am piecing together a lift for my truck and hit a small roadblock when looking for Bilstein 5100 part numbers. Bilstein's application guide recommends one shock for 0-2.5" of front lift, and another for 4-6" of front lift. I plan to do a 4" lift with the torsion key bolts removed, so the lift height should be somewhere between those two ranges. What shocks are you guys with 4" lifts turned down running?