Engine is a 150/5 Moki but the space is good for a 250/5 Moki too. When I made the construction I blew it up until both rotation bodies suit into the cowling this leads to a scale of 1:4,4 approx and wingspan of 100 inch. As soon as the plane is airborne all constrution details including cockpit resin 3d prints etc can be downloaded on outerzone.
Matze