WARNING: This page is about a different car, the 2004 Mercury Mountaineer and 2004 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Spring Code (Label Locator)
Courtesy of FORD MOTOR CO.
Spring codes are listed as a two-part code. The first characters listed identifies the front springs. The second character listed identifies the rear springs.