2005 Dodge Neon SXT UPDATED 1/7/2008

I Drive a 2005 Dodge Neon SXT. Right now i have a few mods done. The only performance mod i have so far is a full dual exhaust with silver line tips to help fit the kit. I am looking for some other performance mods that i can get for my car that will not void the warranty, but i should be out this summer so i will start putting my money into the engine. i also have a full Razzi body kit, 17" Urban Racing rims with Fuzion tires. I have blue neons underneath the dash, 7" in dash phase linear dvd/cd/mp3 player (can play dvd's in drive with no e-brake), depo led tail lights, 1200 Watt power acoustic amps with 2 1200 watt 12" kickers. i have other things planned but for now thats what i have.