It is the CF Amuse kit. I'm not sure how much they cost now, mine was one of the first so I probably payed a premium.

My CF kit is from aerojacket they are a forum sponsor you can order it from them. I installed it myself. It is not to hard but not easy either.

I'm curious to know what carbon fiber kit that is on your Z, where did you buy, around how much, easy to put on or have someone else do? Goes over the stock or replaces it?