If you are going to consider an addition to the standard rise of the current header, than I think you should also consider an offset header similar to the Hatori or MAC offset header for the MK Aurora and the Zigsaw Atlanta. This header is a left hook type that allows clearance for the belly mount nose gear. The rise would/should be to the similar standard rise of the current header in use today. You know, I just had a brain storm, since the header for Rossi and Novarossi are circular and not rectangular as most, all you need to do is rotate the header which would give you any angle around 360 degrees. The header could be rotated from a side mount motor to allow the pipe to be located above the wing/side of fuse. As for my suggestion, never mind - I just resolve my own suggestion.

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