WARNING: This page is about a different car, the 2002 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Shims Thickness, Identification Mark Chart (1 Of 3)
Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 2: Shims Thickness, Identification Mark Chart (2 Of 3)
Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 3: Shims Thickness, Identification Mark Chart (3 Of 3)