[Vehicle Fitment]: Compatible with Chevrolet Corvette 1997-2011; Compatible with Cadillac XLR Platinum 2008-2009, XLR V 2006-2009, XLR Base 2006-2008, XLR 2004-2005
[Installation Position]: Front Upper Left and Right, Driver and Passenger Side
[Professional Replacement]: This ball joint is replacement for above model's suspension system, and may help you resolve those problems: ① loose or shaky steering ② strange squeaky and clunky noises from suspension ③ uneven tire wear ④ steering wheel drifting to one side !!!!