NOTE: KSP 1.4 (either full release or latest pre-release, or 1.4.X) is required for SpaceY 1.17 or later.   SpaceY Heavy-Lifter Parts Pack   Required Dependencies: ModuleManager Cooperates with other mods: TweakScale FAR / NEAR AVC (Add-on Version Checker) Engine Ignitor Community Tech Tree HotRockets! DefaultActionGroups (To enable automatic toggling of SAS light on radial reacti