Another option is to try the Costco Car buying program. If you are a member, you can call them, they will hook you up with a dealer (may not be near you) and they will give you the Costco price. It was about 2500 of invoice. Then you can use that with your dealer.

You have to be willing to walk if they don't come down enough. Also, remember that they are more willing to deal as they get closer to the end of the month. So work'm now, then walk if you don't like the price. Then you can call them back around the 28th and ask if they could take one more look at giving you a better deal. Should do the trick.

Good luck!