Wiseco GM LD9 2.4L Dished 9:0 CR 90.0mm Bore Piston Shelf Stock KitProfessional Series forged racing pistons from Wiseco are no expense spared pistons designed for the serious racers and builders. Packed full of custom level performance and durability features and provided with premium rings, Professional Series pistons are designed and built for use in heavy to severe duty race builds. Remove your limits with Wiseco? s Professional Series. This Part Fits: Year Make Model Submodel 1996 1998 Buick Skylark Custom 1996