I built and upgraded Northwoods Models, Soo Parts Minneapolis & St. Louis (M&STL)  general service gondola one piece body resin 3D printed kit 22080 I numbered 30357.  One unique feature is the inset on the bottom of the side sheets.  Upgrade includes AB brakes and making sill steps from brass.  If you are interested in the build of resin 3D  printed M&STL gondola, photos and write up of the build process including testing of Badger 3D Prime, a two part Translucent Surface Smoother (striation filler) for 3D printed materials, painting, lettering from Circus City Decals and weathering are now available on my blog I have to share photos and writeup of modeling projects on my Minneapolis & Northland Railroad Company.  If you would like to take a look please do at the following link:

http://mnrailroadcab100.blogspot.com/

Lester Breuer