Yep, I've checked into the ARC diff. cooler, $$$ but it comletely changes the look of the rear of the car, absloutely wicked. There are very few things that really grab me on a car and that is one of em.

 

yours looks sweet

the genuine one is double layer dry carbon!!!!!!!!!!!!!!

 

One of the hottest Z's for sure However, I prefer FRP over Polyurethane in most cases especially for full bumpers and sideskirts because poly weighs too damn much and flexes under high speed. Poly is nice though for lip kits