That a mold I took of the set of heads going on my heads up car (B1). They were pushing 420 cfm and there was more there but I had to get moving on the build. I molded them because I have another set of B1’s with titanium valves and this will help get me there quicker and hopefully even more flow. Makes it nice to study a port while in the house watching tv. Yaaa I have an illness. Lol
