Im am looking to buy an 07. I used the request a quote on Nissan's website and sent all the dealers in a 50 mile radius an email that cut straight to chase. I said that I am looking to buy a 07 magnetic black, enthusiast Z with manual transmission and will buy it from the dealer that provides me with the best combination of price and delivery time.

We will see how this works.

 

I got a really good 'Out the Door' price on my 2007 Touring Coupe using the Costco Member no-hassle, no-haggle quote. No BS. What a pleasant surprise!
If you are a Costco member just give it a try and follow the steps. I saved thousands. Everything out the door less than MSRP.
I don't work for Costco.. lol ...it just worked great for me. I had to go to the Nissan dealership that was doing the Costco program in my area. No biggie as they were great.
Costco also offers a gift certificate to use at the dealership if you fill out a very short survey online after your purchase. Also, they offer discounts (might be 15%) at some dealerships on parts and service. I don't think it applies to oil changes. You can print out the offers on their site.
I'm in Southern California, so I don't know if Costco does this Nationwide but I bet they do!