My problem is that I cannot find a way to import custom collision and even if I did I would still need to know how to add multiple collision meshes to a single object and then determine which one was hit.
As for this suggestion of using blueprints to determine whether the location of the impact is light, medium or heavy armor, would that work for a very complicated armor scheme (weakspots such as the lower plate, turret ring, drivers hatch, ect) or is it just for determining which side of the vehicle was hit?