No official name, Z-21 is just a guess.
It’s still classfied, this video is something can’t avoid, as you can’t hide something flying. Little possiblity that we will get some information in November Zhuhai Aviation show.
“P-38L1-LO “Blackie” from the 94th FS 1st FG. Participated in the cover of shuttle raids B-17 and B-24 in the USSR and after landing in Pyriatyn on July 22, 1944 was abandoned due to damage. In 1945, engineers of 173 AP 56 IAD were restored and used for training flights. After the end of the war, it was transferred to the Air Force Research Institute, where flight tests were conducted in early 1947. V.A. Khomyakov was appointed the leading pilot, P.M. Stefanovsky and Yu.A. Antipov also flew on the plane. Then Lightning ended up in MAI, where he was in a relatively general form until 1973, at the moment there is a small part of the wing.”