I did some searching, but didn't quite find the answers I was looking for. I have read that the stock rear sway bar will not fit with a 9" Ford, or the A-body rear axles. However, I did see the 9" install in the stickys here, that does have a different style than mine installed. Looking from the rear, it is horizontal across the rear, where mine has a dip under the center section. What cars did these come on, and what size are they? Also, where is the interference with the bars?