Yes , I was told there was and given a link some time ago . I will try to find it , it was a larger format then the world model and I made mods to it.
I made my own balsa cowl so it was flush and at the time eletric was not practical so I started with a 60 then move to a 90 , in both cases I used a pitts style muffler to keep the front slim as possible .I will try to google it