Custom equal length stepped race headers for M20. These headers and exhaust were computer designed and modeled and real world tested and approved. They are specifically designed for the Pro 3 racing class and capitalize on the engine requirements of the class. These are proven to improve torque and on track drive-ability. The exhaust is stainless steel and the headers Ceramic coated for improved thermal retention. There are zero gaskets required with system which means no leaks and headaches.