Originally Posted by Malm

I have a 2011 and went with the v2 of the Ark Grip .. you should youtube the popular ones and try and find one used if you don't want to pay full price (used is just as good as new if the previous owner took care of it)

I would suggest youtubing:

Ark grip on 370z (price is like 900 used to 1300 new)
Fast Intentions (1300-1650 depending on size of resonators and type of muffler cans) * By far the most popular on the forums..about a 10 week wait on these
Berk
Invidia

And there are few others that are much pricier.

Also, catback system is a few parts..basically all the tubing from behind your catalytic converter all the way to the tailpipes.. and these sets include all the parts.

As far as sound.. I loved the ark grip.. most aggressive looking setup imho, and has a nice deep idle, loud when gassing it, and almost silent when at a cruising speed rpms... Starts to get loud around 3k rpms.

No drone that I notice.