The Industrial Terrain from GrimDark Terrain is compatible with 6-8 mm Epic Sci-Fi games. It fits perfectly into your terrain. Whether Warhammer 40K or other sci-fi tabletop games, it simply fits many settings.The macro rocket cargo for the Samson freighter measures 82x89x32mm.The cargo can be attached with magnets, so you can swap them to remove or add cargo. You need a total of 6 round magnets with a diameter of 5mm and a thickness of 2mm.You can find the Samson Freighterhere:
Samson Freighter Empty
 Samson Freighter With Cargo
We have many other terrain models and also Greebles/Bitz on offer. Just have a look around.