that navi unit is basically just a stock clarion or eclipse unit. i forget which one. but it's just a regular double-din unit that you should be able to buy from most car audio stores. in all honesty, you probably should have just been a little flexible on color and allowed the dealer to dealer-trade for a navi car. the navi cars are $1800 more, which is just what the navi unit costs by itself. good luck. check out the webpages for eclipse and clarion and see if you can find the unit i'm talking about.