Between the full-floating Currie rear hubs, you'll find a Currie Enterprises C-MAC Ford 9-inch housing. Currie no longer makes the C-MAC, but there's a replacement product in the works that will make its way under this truck once available. The four-link pivot points were laid out by James Hall of James Gang Racing, who was responsible for the initial buildup of the truck for Casey Currie. Inside the housing there's a Currie 9+ race case, a 9+ pinion support, a spool, and a billet steel 1350-series yoke. 35-spline axles rendered in 300M material connect the spool with the floater hubs. OC Driveline built the drive shaft.