did you read on their page that they said that their panhard bar does not work with all aftermarket exhausts? thats why my panhard bar goes in first, then i have the catback made.
I had a little problem with the tail pipe of the SLP system hitting the lower mounting bolt of the MM panhard bar (drivers side). I cut an inch off of the tail pipe where it connects to the over the differential pipe section and that moved it up enough to clear the bolt. I had the panhard bar in before I installed the exhaust so it was eaiser to align everything from scratch.
Yep, what he said, I think it was one of the best things I could have done to my Mustang, not only will it launch straighter it also keeps the rear from wallering around while in a corner and eliminates the feel of the rear snapping back when exiting the corners.
I don't know about a list but I've seen where the same brands will work on one and not the other without some modification due to tolerances of both the car and the manufacturer of the catback systems.