Hi I am currently building up a french flaty for my 32. This should get a 4-71er blower and a few more performance parts. To thermally relieve the engine I wanted to install a 4th exhaust port. Unfortunately, I have not found much information and pictures about it yet. Are the channels completely separated (if so, how?) or is the additional manifold operated parallel to the middle port? Greetings from germany matthias Gesendet von iPhone mit H.A.M.B.