As AzNMpower32 said, your best bet is to go onto bmwusa.com to look at the 2008 models. There is really no difference between the standard and optional features between the 2007 and 2008.
What I would do is to go bmwusa.com, use the build your own feature and create your ideal X5 4.8. Here you can read up on all the options and packages. Print the vehicle summary out and check the preowned inventory of your local BMW dealers. A BMW dealer may even be able to do a search for you. Good Luck.
