The springs are only available from Performance Products so you will pay a premium ($370 made in Germany by H&R) but you can easily get the shocks under $300. Most people yield about 2" but never less than 1.5".
not much change in body roll, but it feels better in turns, even at higher speeds. its just smoother and it feels "right", like it shouldve come factory this way.
theyre the HD bil's, got em off ebay.
the springs only come from performanceproducts.com... check out their site for full pricing info.