Not much. Clear corners, grille with clear turn signals, Volant CAI, re-do hatch tint and that'll be about it unless I come across SVT bumpers or Machs for the cheap. Maybe an SVT interior and header swap also.
Lol I died a little also. Just hold the wing up to where you want it and use a marker to mark your holes. I didn't do it myself, since I couldn't bring myself to drill into it lol. But I watched.. it wasn't that hard.
You have to drill into the top of the hatch. The wing has 4 studs on it. You need to make sure you're exact with the holes. Then you line where the wing attatches with double sided tape. Push the wing to the hatch and vuala..