Pics show it all. I get the concept now. Very nice way of setting up the engine to cowl clearance for the backplate. I have put a plane or two together over the past 20+ years. Can you direct me to the web site that has the header and pipe setup your going to use?
I have a Karl Meuller header for the 120AX. He made it on request, but as I understand it, he is going to make a "standard" header for this model with the 120AX. I recommend you check with NE Aero to see when it should be available. The pipe I have is just a .90 size ES pipe. I got it used, not sure what the model number is anymore. I suggest going to Central Hobbies website to see their selection of ES pipes.