Shuttle Payload Delivery Systems This mod adds: IUS Airborne Support Equipment Centaur (G/G-Prime, II, III) Integrated Support System SpaceLab Pallet with two types of "shelfs"   Dependencies: Breaking Ground DLC B9PartSwitch ModuleManager Bluedog Design Bureau Shuttle Orbiter Construction Kit   What version of KSP is this mod for? I tested this mod on version 1.12.3, but I think it will work with any ver