If you are looking for a scale model, one of the best for control line is Mark Meador's Mk IIA. Won the 71 CL Scale Nats and was 6th at the 72 World Championships. American Aircraft Modeler, December 1972. Full Cockpit detail. working flaps, retract gear, 1.25" = 1' for about a 46" span. Plans and article are available from the AMA Plans Service.
If you want a semi-scale stunt ship, there are several. Charles Mackey had one that is sort of an early spitfire, in American Modeler, February 1960. Frank Baker had something similar, Model Airplane News, Ajugust 1955. Jack Sheeks had a I-Beamer, Flying Models, September 1968. The Spitfire done by Windy Urtnowski and Joe Adamusko, Model Aviation, Feb 1988, has a 62" span for a .60 and is basically an Urnowski design with his numbers and airfoil. All of these were "versions" of early Spitfires without the bubble canopy and are basically stunt ships dressed up to sort of look like a Spitfire. There are a number of other semiscale spitfires published in Aeromodeller as well as several profiles over the years in various magazines, but probably not what you are looking for.
The most attractive of any of the semiscale stunt Spitfires is the "Stuntfire" by Scott Bair mentioned above, Model Aviation, August 1983. Plans and article are available from the AMA Plans service. This one resembles a late model Spitfire, like a Mk 22, bubble canopy and not a completely elliptical wing and shows influence by Al Rabe in capturing the "look" of a late model Spitfire and uses the Rabe type airfoil. Fuselage is built up with stringers for lightness. 62" span for .60's. 670 sq in and 51 oz! I have seen one of these and it is a good flying stunt ship.
Keith