I have Nismo Cat Back systems in stock with a bolt in extension to allow them to bolt right on to a G35 coupe. Everything you need is included in this package. This is a great sounding and great performing exhaust. For more info on them Click Here or give me a call @ 770-838-7777 ext 302. We're offering $100 off on the system, online use coupon code NIS350EXT while ordering or call me and I'll place your order with the discount.