I'm normally a COD man, I have everyone from the start....... but I have to say Battlefield 4 looks INCREDIBLE and will most certainly give COD a run for their money!
The Invidia is a very nice high quality true dual exhaust system, I currently have them on offer:
http://www.350z-uk.com/topic/60475-370z-invidia-gemini-cat-back-exhausts-save-45/
Let me know if I can help
I can supply a new nismo exhaust system, but it's definitely not the cheapest one available. Second hand systems pop up every now and then but come in between £700-£900 depending on age and condition.
I've been to said unit to fit some bits to my zed, its a good size unit with plenty of room to get the zed in to work on...........just don't touch the beemers.