[tcrist]

The frame bracket for the upper trailing arm has 2 sets of holes in it. At least my CR LTD does.

Which holes are you supposed to use? Is this where you change the pinion angle if you do not use adjustable upper trailing arms?

Even using the adjustable arms which holes should I use.

The pictures in my manual are not very clear and it does not state in the manual which ones to use. Mine have been in the upper holes. Could this be where my vibration on acceleration is from?

Terry