I installed my 26mm adjustable Whiteline bar w/ the subframe on the car. It was a breeze unlike the front bar. Having said that, if I recall right, my only issue was getting the top and or middle hole to the end link secured. Either of those two holes (adjustment points) would cause the bar to hit the trailing arm. The noise from hitting was more pronounced during heavy straight-line acceleration and hard right hand cornering.
This condition was on a 85,000 mile galant with no body damage and recent four wheel alignment.