Our steel exhaust tips are exact reproductions of the originals but without the long tail pipes. These tips will improve flow, help eliminate back pressure, and can be installed easily on existing systems (up to 2 1/4? pipes). Finished in quality, highly polished chrome. Correct for 1970 Mach 1?s but will fit all 1967-70 Mustangs with GT Rear Valance. These are 11" long with 4" exit opening.