They threw a zinger at us by offering instead of a Grand Trunk O Scale GP9 in blue & red. they have the SD80MAC in GTW colors. There were a lot of the Union Pacific SD90/43MACs on the GTW mainline as run through power in the 1990's.
The GTW auto carrier does not have the name GRAND TRUNK WESTERN on the flat car, which was a common practice.
The Grand Trunk and Canadian National P-S 60' Box Cars are what you have to get if you missed the similar Atlas O ACF 60' Box Cars.
Andrew