I added styrene to the inside to simulate wood, as well as in the corners to simulate the metal supports. I also added D&RGW style coupler pockets, Kadee couplers, and Bachmann metal wheels. First cars I body mounted couplers to as I plan to convert a large portion of the rolling stock to body mounts this summer.
Next comes painting the styrene (inside of the gondola) to look like bare wood. And hopefully getting a close color for the coupler pocket to match the car.
They will eventually look similar to this pipe gondola I kitbashed from an LGB gondola (shown before I lettered it)
Thankfully I won’t have to letter the two gondolas I’m working on now. That’s a big time saver.