If you want to slam it, springs and struts or true coilovers are needed. The lower you go the more money it costs for good products. Any thing more than 1.5" will need camber kits. For springs I suggest H&R's, coilover sleeves Ground Control. More than 1.5" of lowering should be done using Koni Sport struts, KYB and Tokico make stock length struts which means that they wont function at the full potenial and wear sooner. For the same amount of money (Ground Controls/Koni Sports or H&R's/Koni Sports) you could buy an entry level full coilover setup.
I really think you should read some of the other posts since this basically going to the most commonly asked question -
what parts should I use to lower my car?
One thing to remember with adjustable ride height springs(sleeves or true coilovers) An alignment is needed EVERY time you change the ride height even if it's only 1/2" and corner weighting should be done. As a basic rule, if you do not know how to setup coilovers stick to lowering springs.
IF YOUR CHEAP WITH SUSPENSION YOU WILL REGRET IT!
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