Fits 18 23 Mustang 2.5" Axle Back w Quad 4" Dual Wall Tip Exhaust Black S7211BLK clothing and collectables ) 50 Series California Substrate UNBRANDED ) 50 Series California Substrate Material Ceramic Air Tube Adaptable No Subtitle California CARB Compliant Converter Quantity 1 Title California Direct Fit Inlet Attachment Bolt On Type Direct Fit Main Piping Diameter 2 Oxygen Sensor Location Pre Converter Finish Stainless Steel Outlet Attachment Bolt On Mounting Hardware Included Yes This kit is ideal for engine swaps & race cars that use a mechanical oil pressure gauge w the GM LS engine everything but the tailpipe and tip are left as mill finish steel for better resistance of damage under your vehicle high heat black powder coating on the tailpipe(s) and tip(s)