This direct replacement is the 2-1/4 inch H pipe only and is for any 1971 Mercury Cougar or Ford Mustang with stock cast iron exhaust manifolds. These units are manufactured right here in the good old USA from 2-1/4 inch aluminized pipes and made from an original 1971 Cougar and Mustang with the 429CJ engine. We also sell OEM style dual exhaust systems that include the H pipe, mufflers, and tail pipes.
*NOTE* Please allow 2 - 3 weeks for delivery.