This aftermarket tip is very similar to the 70 Mach 1 design with the exception it does not have the concours Rolled tip. It will fit the rear valance exhaust cut-out on all 67-70 Mustangs, and fits up to 2 1/4" exhaust pipes. For a concours Correct 70 Mach 1 version order part number D0ZZ-5255-A. This tip is sold as singles. Two are required for a dual exhaust.