I was researching this awhile back because I wanted some. I found out that unless you have access to a dyno, its not worth it, because there is no way to properly set them up without it.
-Ken V.
1998.5 SE Praire Tan Zetec ATX
psycho_bass@hotmail.com
Roush springs Roush rear sway bar BAT struts 17" Millie Miglia HT3 and a ton of subtle asthetic mods