I have a new copy of the Sig Ryan STA plans, and a new set of 90W/S Ryan STA for Quadra /Zenoah engines.
The MAN plan is also 90 inches, was not designed by Haffke, and origionall had a DuBro prop reduction unit in it with a 60 engine. It also was easy to build it heavy if not careful. I used a ST3000 in mine.
Dennis