I am indeed, that part in the bottom-right is the new mounting bracket for it. Into that will fit the brushless motor and the linac (minus its original gearing and motor), and I'll drill some holes and add some of these new gears in, which are a decent amount bigger. I'm planning on having another plate on top to sandwich them in, but that can just be cut out of the same steel sheet I'll be using for my side armour.