I love this model too. I built this model as a Young kid back in the very early 60's and I loved the fact that it was in "TWA" markings, considering one of "TWA's" major hubs was across the river from us in St. Louis. I more recently bought the re-release with the decals that let one cut the decals with two cuts and one then got the original "TWA" markings! I bought it to modify into Andre Nortons "Solar Queen" for my wife.
I have a suggestion for Billieblurzzz:: Get on the Disney website and You will find free cardstock models including the Disney " TWA" ship. It makes into a nice size ship that, if built properly would most probably take the 'D' engines. Maybe one of our colleagues on this site might remember where it is. Cheers!