MagnaFlow Direct-Fit Catalytic Converters are designed for easy bolt-on installation for the Professional Installer. Each is designed to exact the original equipment specifications. While the majority of the Direct-Fit Catalytic Converter products do not require welding; cutting or bending; limited applications may require additional welding for optimal installation. PartNumber : mag24102 Description : Conv DF 91-93 Old Cutlass CAT Converter Air Tube Adapter : Not Air Tube Kit Adaptable Converter Body Size : OEM Core Substrate Material : OEM Emission : Non-California (49-State) Inlet Size (in.) : OE Material : Stainless Steel Outlet Size (in.) : OE Overall Length (in.) : OEM Inlet Inside Diameter (in.) : OE Outlet Outside Diameter (in.) : OE WARNING CA Proposition 65 : No Catalytic Converter Air Tube Adapter : Not Air Tube Kit Adaptable Outlet Outside Diameter : OE Inlet Inside Diameter : OEM 1991-1993 Pontiac Grand Prix GT V6.-cc Exhaust, Mufflers & Tips::Catalytic Converter Direct Fit 1990-1993 Pontiac Grand Prix LE V6.-cc Exhaust, Mufflers & Tips::Catalytic Converter Direct Fit 1990 Pontiac Grand Prix Mclaren V6.-cc Exhaust, Mufflers & Tips::Catalytic Converter Direct Fit 1990-1995 Pontiac Grand Prix SE V6.-cc Exhaust, Mufflers & Tips::Catalytic Converter Direct Fit 1990-1993 Pontiac Grand Prix STE V6.-cc Exhaust, Mufflers & Tips::Catalytic Converter Direct Fit