Some more corrections to AM's table.
There were two prototypes of "62" long-range bomber (Tu-2D). But, despite the identical designation, they had some notable differences. The first, converted from production Tu-2 #718, retained standard Tu-2 nose and 4-member crew (the differences from Tu-2 were: enlarged outer wings and vertical tail fins, larger fuel capacity, new propellers and modified pilot's canopy). Its factory tests took place from July 3 to September 23, 1944 (first flight at July 12), official state tests from November 20, 1944 to April 23, 1945. Later it was used for different experiments until 1947, and then was scrapped.
Unlike it, the second "62" (#714) had new longer nose with navigator in prone position and a crew of 5 (the co-pilot was added, his place was behind the commander). It underwent factory tests from October 20, 1944 to March 1, 1945; official tests from July 18 to October 31, 1945. Later, in July 1946, it was converted into a torpedo bomber version called "62T" (factory tests August 2 - September 28, 1946; official tests January-March 1947), and then into "69" (Tu-8) prototype. The "65" and "67" prototypes also were derived from second "62".
The main difference of "65" machine were liquid-cooled Mikulin AM-44 engines (1650 / 1950 hp each) with AM-TK-1B (TK-300B) turbo superchargers. The single prototype was converted from production Tu-2 #201 in May 1946. Its factory tests proceeded from May 21, 1946 until May 6, 1947, but only a few flights were done (the first only at July 1, 1946) - the cause was very unreliable work of turbo superchargers.
The "67" with diesel Charomsky ACh-30BF engines (1500 / 1900 hp each) was also a single prototype (# 402). It was built at November 1945; factory tests from January 15, 1946 to January 2, 1947; maiden flight at February 12, 1946. Neither the "65" nor "67" weren't transmitted to the official tests.
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