JBA p/n 1655 headers are specifically designed to fit ‘64-1/2 - ‘70 Mustangs equipped with 351W engines equipped with manual transmission and a cable actuated clutch. The mid-length design of the headers provides significant increases in torque and horsepower throughout the RPM range and allows for maximum ground clearance. Ideal for cars with lowered suspension. To help make sure you choose the correct headers, h-pipe and exhaust for your Mustang please refer to the chart below. If you still have questions, give us a call. Stainless Steel and ceramic coated.