Take an older Rapido car and change one end to a MT-truck coupler assembly. Then use this car as a "head end" car to connect a knucle loco to a string of Rapido coupler cars OR visa-versa.
I have about 60 $2 bulk Rapido freight cars from 13 yrs ago that I converted to MT magnetic knucle couplers using an MT truck/coupler assembly. All works fine.
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