There where at least two C-121H prototype's built that has Allison 501 engines. After the tests where down the navy cut the wings off them and sold the for scrap. Flying Tigers bought them and two passenger 749's. They then mated the wings off of the 749 with the 121H cabins and they ended up with two heavy floored cargo 749's fairly cheeply.
OBAMA-WORST PRESIDENT EVER....Even SKOORB would be better.