98 mustang sagging on passenger rear, already replaced shocks and springs.

98 mustang sagging on passenger rear, already replaced shocks and springs.

Ok I know that these issues have been discussed before, but I'm new and I'm on my phone...needless to say its hard to navigate web sites on it.

Anyways, I'm not understanding what's causing this. I measured from the top center of each tire, and its off over an inch. Wth???

I can do all the work myself, so its not an issue, but I don't know what to look for. I googled the hell out of this and all the forums I'm getting are for old gm cars or classic mustangs. I keep seeing people saying things about upper and lower control arm bushings, but again these forums I was reading were not even close to my make or year.

Oh and when I changed my springs. The drivers side spring was shorter and the and the top of the spring was flat. I bought it from a winner.