I have the Trainworx hoppers with 1025 couplers. The draft gear can be shortened enough to fit and the coupler will still work. Getting it on the car without having the case come apart can be tricky, but they will fit. I trimmed the body bolster for clearance, as well as the back of the box, and everything fit - barely. I also used MDC trucks, which don't have MT's offset bolster hole, and had to grind clearance notches in the slope sheets for the wheels, but again, they work, and the holes don't go all the way through the floor.