The type certificate data sheet (TCDS)for the Scheutzow B can be viewed at the FAA website:
http://www.airweb.faa.gov/Regulatory...D?OpenDocument
The helicopter cabin is'nt particularly pretty, but if the mechanical design is sound then maybe some cosmetic changes could be made without going through a new certification.I have worked with the FAA as production manager at a small company that built a two seat fixed wing light plane.We modernised a 1946 design (Interstate Cadet) and beefed up the structure and added a 150hp LYC.
It is easier to start with an existing Type certificate because the old rules apply, even if the design is changed.
I could send a letter to the current owner if there is interest in trying to buy the design rights.
slowrotor