As already mentioned, there have been a few stunters published that could be loosely called semiscale Goodyear racers.
Paul Placan did the Bonzo that is probably closest to scale of any of these. At least, it really captured the appearance of the Bonzo. Lucky Pyatt built one and had it at the Nats around 1999 or 2000. American Modeler, Nov/Dec 64.
Jack Sheeks named a model the Knight that resembled the Rivets with the appearance of the T-tail like the full scale Rivets. It gave the appearance, but in actuality, the horizontal tail was not any more above the thrust line than most stunters. This was an I-beamer. FM Jun 69.
One of the more attractive of these was the Miss Dara that Jim Vornholt published. FM, Dec 73. I believe he had some success with it at the time and was flown at least at one Nats.
Allen Brickhaus also did a Miss Dara, but was a profile, FM May 83. Nice looking profile. The Miss Dara was/is one of the better looking midget racers.
Allen also did a profile Folkerts SK-4 in Profile. MAN Aug 79. Another nice looking Profile from the Brickhaus design studios.
When I read the description by Larry Borden above, my first impression was that he remembered the Midget Mustang by Englishman Tom Jolley, MAN, Oct 68. Wing mounted gear, though with a fairly narrow tread. The wing was sheeted and looks similar to a Nobler and mounted slightly below the thrust line rather than being a low wing like the original Midget Mustang. No dihedral. About a 54 "span. Really did a good job of capturing the looks of the Midget Mustang, even with the mid wing position and had the typical stunt ship skinny fuselage. Merco 35. Plans are available from the AMA plans service.
Keith