I don't think there's a ton of information on lowering them here beyond lowering springs like romytoss talked about since most folks are interested in going the other direction, but you could shoot
miamiheat3332 a message. He did a lot of suspension work (specifically to improve handling), and I think he's still around from time to time.
Here's some threads that may be of interest:
post6437086.html
post5552501.html
post5395809.html
Good luck and let us know how it goes!