Big Red is right about the "Big Metal Unit." To get it you need the gold pantaloons from the friendly arm in BG, the bronze pantallettes from Abazigals dungeon in ToB, and the silver pantaloons (i dont know where they are). Once ou have all of these, go to the guy in Balthazar's town in ToB who says he works with special materials, and he will make the BMU for you
