Bain racing cylinder head porting , with over 20 years in testing and development , we can beat nearly any head on the market , in flow and most importantly cross-sectional area , which is the key to making good power and torque, we can flow test and develop a head for you , and design a port to suit your needs, what most people dont understand is a drag car needs a different port to and circuit car and so on , we at Bain racing can  design and port the head to work with your engine and motor racing needs