I found a 2-car set. I also found the associated parts car:
(K-Line) K691-1172A - TCA Pacific Northwest Division Boeing 2-Car Airplane Transport Set
(K-Line) K691-1152 - Boeing Airplane Parts Car
As you can see, the fuselage is unpainted. Would love to find someone that could paint it the appropriate shade of green or whatever color they are supposed to be.