[xlr8tr]

as mounted, the top links will force the axle to move in and out, rather than just up and down. Look at the pictures above and think about the arc that short arm travels in: under either compression or extension, it tries to pull the axle towards the center of the vehicle. If both sides go up or down at the same time you will be ok, but if only one side goes up or down there is an immediate force trying to pull the axle in towards the centerline. Longer links mounted closer to the centerline would minimize the effect, as the arc is bigger creating less "pull".