Fits 1970-1979 AMC 304, 360, 390, 401. Dogleg Ports, 1.25 Inch x 1.75 Inch 1997 pontiac firebird Lightweight LS may require trimming

Lightweight LS may require trimming and an additional 1/4" front end drop may occur with a full weight big block

This adapter uses O-Ring seals and has -6 AN male flares for use with AN pluming & Earl's (or similar) oil coolers

Versatile Design Is Lightweight And Easily Mounted Using Double-Faced Trim Adhesive Or A Dual Lock Style Fastener

75" turn down tips

Fits 1970-1979 AMC 304, 360, 390, 401. Dogleg Ports, 1.25 Inch x 1.75 Inch 1997 pontiac firebird Lightweight LS may require trimmingManufactured from high temperature steel core graphite faced exhaust material. Expanded steel core provides stability and maximum torque retention to eliminate gasket failure. Graphite facing provides excellent heat resistance and thermal conductivity to transfer heat away from the cylinder head. Conforms to and seals minor surface irregularities. High recovery material allows header or manifold flange to stay sealed if flange loses clamp load. Can be