SLOTKING69 Mirroring makes an exact duplicate of one drive's data on a second hard drive. The main differences are the lack of the steering mechanism, the addition of the drive shaft and the greater weight that the rear suspension must carry. 9.8.2. All highly stressed steering and suspension components shall be made from SAE 4130 steel or an alloy, specified by its manufacturer as having equivalent physical properties. All such parts must be heat-treated, including stress relieving, normalizing, annealing and hardening when applicable, after forming and/or welding as recommended by the manufacturer of the alloy being used.|Understanding Slot Pragmatic