(Last plane on right)
Freemen AAF September 1945
Ray White via Lou  Thole

Supermarine Spitfire VII: High-altitude fighter evolved from Supermarine Spitfire VC (Supermarine Type 351) with pressurized cockpit, sliding hood, increased fuel capacity, retractable tail wheel, two-stage, two-speed 1,565 hp Merlin 61 or 1,710 hp Merlin 64 (in Supermarine Spitfire F Mk VII) or 1,475 hp high-altitude Merlin 71 (Supermarine Spitfire HF Mk VII). Extended wing-tips usually fitted and, later aircraft, broad-chord rudder with extended tip. Prototype conversions of Mk VCs flown second half of 1942; 140 produced by Supermarine, first deliveries September 1942 and operations began same month. One Mk VII to USAAF at Wright Field in April 1943.

Source: http://www.jaapteeuwen.com/ww2aircraft/html%20pages/SUPERMARINE%20SPITFIRE%20(Merlin,%20Fighter).htm

The Spitfire VII (Type 351) was a more extensive re-design for high-altitude work and was the first of the Spitfire series intended to make use of the two speed Merlin 60 series of engines. These two-stage engines were coupled with a re-designed cooling system which showed itself in the enlarged air intake under the port wing matching that to starboard. The wing outline remained similar to that of the Spitfire VI but the ailerons were reduced in span. The chord and area of the rudder were increased and the elevator horn balance was extended. Structural changes were made to the fuselage to take the increased engine loads and a double-glaze sliding hood was fitted to the cockpit. The retractable tail wheel first developed for the Spitfire III was applied in production for the first time on the Mark VII and the universal C -type wing was employed. Maximum speed jumped by 44 m.p.h. to 408 m.p.h. and normal loaded weight climbed to 7,875 lb.

Source: http://www.military.cz/british/air/war/fighter/spitfire/history.htm