Information?? High quality chassis partseries products. Made with high strength steel tubing for superior strength and durability. Stable performance, reliable quality and long service life Uniform thickness, no blow holes, slag, cracks, tearing, or incomplete fusion. Measured by specialized inspection tools after welding to make sure assemble hole , bushings insert, and installation sizes are proper. Professional InstallerisHighly Recommended(No Instruction Included) Alignment Highly Recommended After InstallCompatibility Chart?? For 1998-2008 8.5″/8.6″ Housing 10 Bolt Rear EndPackage Content?? 28x Pinion And Carrier Shims 4x Pinion And Carrier Bearings And Races (3.062) (Lm603012/49) 1xPinion Seal 1xPinion Nut 1xCrush Sleeve 10xRing Gear Bolts 1xCover Gasket 2xMarking Compound W/o Product Instruction??