The Koster set came with vacuum formed fuselage and resin parts for the engine fan, intercooler grill, and the propeller parts. Everything else came from the Monogram set, though with the addition of a Black Box P-47N resin cockpit set. The Koster vacform parts were very nice, the resin parts not up to current standards but very useable. The propeller blades and spinner parts took the most work and would have benefitted from more. Koster also did conversions for the XP-47J and the XP-47H.
I rescribed everything, undercoated with Model Master Black Chrome, and finished with Alclad ALC 101 and Stainless steel for the cowl flap area.
The XP-72 had only six guns, and was powered with a Pratt and Whitney R-4360, like the F2G Corsair. It was to have a remote mounted shaft driven first stage supercharger in the aft fuselage, and a second stage on the engine accessory case. There was no turbocharger. Two were built, one with a four bladed propeller, the second with contrarotating three bladed props. The first one reached 490 mph without the big supercharger and the second was expected to reach 540 mph with it, but development was cancelled because jet power was more promising for new designs.
The last photo shows it with the ProModeler P-47N. If the XP-72 had been produced it most likely would have had the same extended long range wing as the P-47N. What a couple of brutes!
