If you just want to lower your car for looks, the street, and occasional track driving then you could just get springs, and caster/camber plates from Steeda, Ford, or a bunch of other companies. If you have the money and want a great handling car for the street and AutoX/road course then I'd go with coil overs for sure from Griggs, Maximum Motorsports, or Kenny Brown. You can search and find a bunch of info on this subject at the corral.net, and corner-carver.com. I'd also suggest subframe connectors if you don't already have them.