RE: 50cc Plane?
Yes they have a header but it will take a Swan neck type of pipe to get from the side of the jug on the engine to the center of the fuse. They sell a short "manifold" and all kinds of "plumbing" pieces to get what you need but without knowing just what to use I guess I'll have to buy a bunch of different pieces to get the shape I need & then someone to weld it all up. Better yet do a little measuring & get some one to make me a pipe with the demensions I need. I think Paul at Just Engines is pretty efficent at doing this!
Here is a pic of what I'm talking about