i bought a ifs kit from jim meyer race products (
http://www.jimmeyerracing.com). i think you can run coilovers or shockwaves. i have coil overs. its not cheap, but very nicely made, and really is a "bolt in" the kit uses chevelle or impala spindles (i have chevelle)
i don't know if your trying to do this on the cheap or not? thought i'd chime in