The original model has truck-mounted Rapido couplers. My fleet standard is body-mounted Z-scale couplers. First I needed to check the body's height as compared to the Micro-Trains coupler height gauge. This photo shows a close-up of the check. It is very close.



Before being able to install the new couplers, I needed to remove the old couplers from trucks first. Using a small jewelers screwdriver the lid from the old coupler can be removed. The old Rapido coupler can then be removed.



A part of this hopper car is the metal sub-structure of the car. It adds the (small) weight of the car and holds the trucks. There are two small holes that are a perfect fit for Micro-Trains N-scale couplers' screw. The Z-scale screw is thinner and shorter, but it doesn't fit the hole. I decided to use the N-scale couplers' screws to mount my Z-scale couplers.