Has anyone lowered their s197 mustang yet using the combo of dropped spindles in the front and lowering springs in the back?

I saw that Granatelli is selling dropped spindles, and i wondered if anybody has tried them yet. If i'm correct on dropped spindles, you use your stock front springs. The only additional springs you will need would be rear springs. However, lowered rear springs are normally stiffer. I was wondering how well that combo works.

granted the lowered look would be an improvement, what about ride and performance?