Rear Suspension Movement

[xnamerxx]

So out of curiosity sake, I asked a chassis engineer co-worker of mine the question on what will these bushings do?

His response...
Since the axle is setup like this |/-\| the bushings will limit articulation movement and introduce bind, but that's not necessarily a bad thing. Under bump conditions since the axles are no longer able to pivot freely they deflect the trailing links on bump and cause a toe-out condition on both tires, and modeling how much bind is introduced you can use is as roll resistance rather than using springs or an ARB. In his opinion its a cheap way of solving a problem but not the correct way to solve the problem.