44-74427, N2251D at the time, seen in 1970 at Oshkosh after an O2 bottle explosion. Was rebuilt, flew as Miss Coronado, now F-AZSB "Nooky Booky IV", with JCB Aviation near Nimes in France.
Notably, this was a Cavalier civil conversion built-up specifically for Hoover and Rockwell in 1962. As Marc indicates, it is N2251D (44-74427).
This aircraft was rebuilt In Jasper TN after the ox exp. Liquid dont go in low prussure tanks OOPS!!! Thw owner of Chatt.Bolt and Screw Co. I cant rember his full name John------ crashed after being cut off in Ga. by a D-18 at a small field,much damage no one hurt but bad smell in copit LOL! Rebuilt again,dont know where it is now! Pops DC-3 is my email as I have a lot of time in thes great airplanes as well as DC-4 and 6 .
The Owner of Miss Coronado is John Baugh. He also owned a P-47 for a while. It's been a long time since I worked in TN, so I don't know the present status. If you want to know about these aircraft, Chris Rounds, (The Red Knight) at Rounds Aviation in Tullahoma TN would be the one to go to.