Lafiel So even if I do it has to be a composite.
No worry! my mod adds an impulse warp thruster (it works by expanding space in the direction it points in, the distance from the engine is variable, so it could be inside the ship and still allow for movement, due to this, it can be grouped up enough to move heavy ships such as the kirikari (in universe has a weight of 1.7 million tonnes, though its still heavy in game, around 400k tonnes)