It is the Advantage Biplane
The full size is a home built plane flown by Richard Blatter. The design started life as a Weeks Solution then was radically modified. 1100 lbs and a IO540 engine developing 368 HP - That is real size 3d

[link]http://musclebiplane.org/htmlfile/advant.htm[/link]

Here is a link to the Weeks Solution that the fuselage was taken from
[link]http://musclebiplane.org/htmlfile/solution.htm[/link]