camber is somewhat random with each car, your best bet is to either put on the springs and then decide if you need the kit, or buy both and if you dont need it, resell it to someone. for instance, you will most likely need the rear camber kit for any drop (get the extreme 3 degree kit just to be safe) but i dropped my front suspension an inch and a half past its original drop (3.5 total) and i have no extra camber, so who knows. i was also told by a guy at skunk2 that rim size may affect actual camber angles so the smaller your rims, the more negative camber you will have (stock RS=more camber, stock GS=medium camber, 18-20" aftermarket wheels=least camber)
http://www.geocities.com/blue2gnt

1995 Eclipse GS - HRC Stage 2 - Retired.
2004 350z Enthusiast / 2008 Nissan Versa SL