A mod that allows you to edit parts directly in the game.
Install SFS Modloader first.
Go to releases and download BuildUpgrade.dll. Once download, put BuildUpgrade.dll into MODS/BuildUpgrade folder in Spaceflight Simulator_Data. You can found Spaceflight Simulator_Data in folder where you install steam in the nex path: Steam\steamapps\common\Spaceflight Simulator\Spaceflight Simulator Game\Spaceflight Simulator_Data. Finally, execute game normaly.
