Fokker F26
The F26 was a low wing all-metal aircraft seating 17 passengers. As a novelty for a Fokker aircraft, there was to be a pressurized cabin.
The proposed engines were Rolls-Royce Nenes, the most powerful turbojets at the time. To assist accessibility, the engines were positioned beneath the front fuselage - again an innovation. And the low-mounted wing was to be equipped with flaps. A three-man crew was envisaged: two pilots side-by-side, and behind them a wireless operator facing aft. The passenger cabin had a double row of seats on the starboard side and a single row on the port.
At the rear end of the cabin was a toilet as well as two cargo holds. The retractable landing gear was of tricycle layout. A cruising speed of 500 mph and a range of 620 miles were given in a brochure. Later descriptions in the aviation press refer to the F26 as a "praiseworthy effort to develop a jet airliner". KIM was quite interested in the Fokker concept as can be seen from the minutes of a meeting on 6 October 1948 when a number of Fokker specialists briefed KLM boss Plesman and technical director Henk Veenendaal. Encouraged by the airline's response, Fokker's Preliminary Design Department made a few more designs of twin-jet airliners which were discussed with KLM and the Netherlands Institute for Aircraft Development (NIV).
In Plesman's view however, the development of a jet airliner would be too much for Fokker to manage alone. He proposed cooperation with cle Havilland in England who were known to be working on a jet liner - later named the Comet.
Subsequently there was some contact and an exchange of information between the two companies as shown by design drawings in the Fokker archives. In October 1949 Ir. P. J. C. Vos, a director of Fokker, wrote to Professor Dr. Ir. H. J. van der Maas about a comparison between a jet and turboprop airliner.
You could build a US copy using either a C-46 Commando or the Boeing 307.
Sources:
Facebook The Greatest Planes That Never Were
IRMA:
Building the 1/72 IRMA Kit No. 7©SM®TM Fokker F.26 Phantom