Most serpentine belt part numbers contain the belt's length in millimeters if you know how to read it properly. If you've eliminated some of the accessories, cut an old belt and wrap it around the pulleys to get an idea of how long the new belt needs to be. Don't forget to allow for the movement of the tensioner in your calculations, and make sure everything is going to turn in the correct direction.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!