I have a Hanson daltotel with a Rossi .60 RE with an internal pipe. the engine is side mounted and the head and header is hidden in the cheek on the cowl. The pipe is inside the fuse in its own pipe chamber. A silicone tube directs exhaust goo out the bottom of the fuse behind the wing. It was bought from a member on here, hrrcflyer, and there are pics somewhere on this forum.