Eibach/Koni's are the most popular combination on here...
Ground Contril coilovers are more stiff, but provide a lower stance.
There is always the ST200 struts, and SVT Springs..
(not to mention the Eibach GB going on right now.. )
free is good, but keep your eye CLOSE on that electrode, as it is not coated like the rest, and with a wastefire ingition, you are going to wear them out rather fast.
Congrats, though.
Ray