[Campbell-]

Well, the body will be repaired once you set the vehicle health to 1.000. So you need to create a request if engine_repaired is true or false. Like that you can always check if the engine is repaired or not and like that you'll be able to seperate the engine from the body. However, you will need to include this request if the engine is repaired or not whenever you would like to eigher repair the engine or start the engine.