[special-K]

When you lift a truck that comes with a sway bar,like post-72s,the best way to compensate for the lift is to space the sway bar mounts off the cross member. Longer links make it weaker and also allow more lateral movement,which is cancelling out the whole point of the sway bar. On a 4" lift they supply pieces of 1 1/2" square tube,which works fine. So,staying level doesn't matter much. I imagine with the angle too steep would cause the sway bar to perform poorly,though. My '72 K2500 has a sway bar added and the cross member is a piece of c-channel flat side down. Articulation is only an issue in extreme off roading and most things that increase articulation take away from road manners,especially on a heavy truck.