I bought a bunch of USA Trains 60’ boxcars on sale with the intention of removing the auto parts box and re-using the frame to build other types of cars. These Gunderson/Greenbrier high cubes are my first 2. I used mostly sheet styrene and PVC cut with the CNC a few 3d printed details and brass grabs. There are A LOT of parts!
I modified Kadee #904 couplers to replace the stock ones using the existing box. I’ve shared files for printing jigs to facilitate this.