Zex makes a kit for the 2008 350z...same engine design as the 370z so it works just as good for our cars, all parts are included. Wish I would have found that before i bought my nitrous kit for my 370z at a local shop, ended up paying abit more for the extra fogger, lines and fittings...heres the link.
Zex: '07-Current Nissan 350Z Nitrous Kit