[SlideWRX]

The adjustable panhard bar is largely there to correct side to side variation. Measure how far in the wheel is from the body lip on each side. Half the difference is how far the panhard needs to be adjusted.

You don't have to control pinion with just the uppers or lowers. I'd actually split the difference, and that should keep the track near stock. If you are drag racing, moving the rear axle forward would have a slight improvement on traction; don't know if it's enough to show up in timeslips though. On the other end of that, if we increase the length of the upper control arm the ride should get a wee bit better.