I have the same engine as you. First thing i did was CRABs FPU(now sold out but email Lampoon to get on the waiting list). Also have Toyo performance tires which help more than you would think.
RacingLine Grounding Kit
Eibach Lowering Springs
Then over winter i will be custom making an exhaust.
Last thing should always be the tune, get the ECM tuned to every performance part you have so you get the most bang for your buck.
Visual Mods: Back half 5% tint, Front half 15% tint, 5% Eyebrow tint, Rain guards, Debadged, Arrowhead overlays, Interior LEDs, Painted engine covers, Tinted tails, 6K Low Beam HID, 8K High Beam HID, Painted Grilles, Painted Door Trim
Performance Mods: CRAB intake, 18" Toyo Extensa x 4, Racingline STB, Racingline Grounding Kit
Audio Mods: Head Unit: Pioneer AVH-P5100DVD, Front Speakers: Memphis 6 1/4, Rear Speakers: Memphis 6 x 9, Subwoofers: Kenwood KFC-W3012 12" x 2, Amp: Kenwood KAC-8105D 500W