Technically, you don't need anything besides the springs. However, you'll definitely blow out your shocks and struts after a short time if you don't upgrade to the SS shocks/struts. The most recent version (FE5/LNF, for the SS/TC) is the best overall, but the ones from the SS/SC would be okay too. I'm in the middle of collecting parts to lower mine, and I'm going with the FE5/LNF shocks/struts and a set of Canuck Motorsport springs. Anything besides shocks and struts is optional and won't break from being lowered. Not a bad idea to upgrade while you're at it if you're looking to tune your suspension.
All the FE5/LNF parts are pretty cheap on Amazon. I got my struts "Used - Very Good" and they looked brand new, so that might be an option if you want to save a little money.
Believe me, these cars have a habit of growing on their owners. Your feelings will only strengthen over time...
Last edited by Parthros; 11-11-2015 at 12:48 PM.