The lightweight aluminum back bulkheads may play a role in additional weight savings. The bulkheads function a greater ARS link mounting position enabling for greater modification possibilities, the horizontal orientation enables going the ARS link frontwards or backwards to boost the rotation faculties. The bulkheads utilize centering pins for easier placement regarding framework and for increased rigidity and persistence. The anti-roll club mounting position keeps the cable club placed directly beneath the drive shafts for an ultra-low CG. CNC-machined from premium & lightweight Swiss 7075 T6 aluminum not to mention black anodized.