I think if you do a search you'll find a wealth of information. You can look into Eibach, H&R, and Neuspeed for springs, Koni and Bilsteins are some popular shock choices around here. Also there is a group buy going on for the Neuspeed springs, Koni and Bilstein Shocks.
http://www.clubb5.com/forums/viewtopic.php?t=65564
http://www.clubb5.com/forums/viewtopic.php?t=71012
http://www.clubb5.com/forums/viewtopic.php?t=69000
http://www.clubb5.com/forums/viewtopic.php?t=65564
http://www.clubb5.com/forums/viewtopic.php?t=71012
http://www.clubb5.com/forums/viewtopic.php?t=69000