From Joe Baugher: 

Douglas XA-26E Invader

The XA-26E (44-25563) was the prototype for the A-26E version, which was a proposed follow-on to the A-26C. It bore much the same relationship to the A-26C as the A-26D did to the A-26B. The A-26E was powered by two 2100 hp Chevrolet-built R-2800-83s. It flew for the first time in 1945. It was planned that the A-26E would succeed the A-26C on the production line at Tulsa. However, the end of the war put an end to such plans, and a contract for 2150 A-26E-DTs was cancelled following V-J Day.

Serials of XA-26E

Serial Number: 44-35563	
Model: Douglas XA-26E-DL Invader
Construction Number: 28842

Sources:

  1. United States Military Aircraft Since 1909, Gordon Swanborough and Peter M. Bowers, Smithsonian Institution Press, 1989.
  2. McDonnell Douglas Aircraft Since 1920: Volume I, Rene J. Francillon, Naval Institute Press, 1988.
  3. American Combat Planes, Third Enlarged Edition, Ray Wagner, Doubleday, 1982.