stability control and upgraded suspensions

One of my many thoughts that didn't involve moving somewhere warmer while I was sliding around in my Mustang today (the roads here are now 3-4" of solid ice thanks to a week of freezing rain and snow) were thoughts about upgrading my car's suspension some time after the spring thaw. I'm pretty set on the Ford Racing package as its a fairly mild drop and a fairly complete kit, but I got to wondering...

I know most of us are mostly concerned with stability control about as far as "Can I turn the damn thing off completely" and that's about it. How do lowered suspensions with stiffer springs, different damping, different sway bars, etc effect how well stability control systems work when you want them to actually work... like say on ice covered roads half the year? It might be my imagination, but I seem to remember some cars having ABS issues when running race tires autocrossing so I'm curious if there are similar problems with stability control systems.

Since stability control is based primarily on difference in wheel rotation, I don't see suspension as having any effect. For what it is worth, I can slide both rear wheels on smooth ice with out exciting the stability control.

does Ford's system use yaw control?

Either way, as proved by bmw tuners.. a stiffer and tighter suspension with an LSD work in harmony with traction and stability control. The more control you have over the car, the less the nannies intrude