Well, I made a mistake. There will be four versions of the P-47 on the drawings, not three. I forgot one of the "D" versions had no dorsal fin. As for the pointy nose version, there were a number of them. Actually, the first P-47 design was a light weight fighter with the Allison V1710 engine. Before it was built, the military sent out a new set of specs for a fighter and Kartveli started over with 2000 horsepower, the R 2800 and the supercharger and it became the Jug. There were a few pointy nose versions during the war. The "H" was to be powered by a Chrysler XI-2220 inverted 16 cylinder engine that was unsuccessful. This is the one you probably have in mind. The "J" had a big spinner and a fan assist cooling for the R-2800. The last one was basically a P-47 with a P&W R 4360 but was designated XP-72. Kind of like swapping the LA46 for a PA61! The onset of the jet engine ended that deal.
Don