Each portal conversion kit features• Four drive/steer wheel ends with a direct interface to a Dana 60 kingpin inner “C” (high strengthinner “C” recommended) for the four wheel steering configuration• Two drive/steer wheel ends with a direct interface to a Dana 60 kingpin inner “C” (high strengthinner “C” recommended) and two drive only wheel ends with adaptors to a Dana 60 rear axle forthe two wheel steering configuration.• 4 gear configuration (no flipped carriers or reverse rotation gearing required)• 1.5” diameter / 35 spline 4340 steel input shafts• 2” diameter / 41 spline 4140 steel output shafts• Single Wilwood four piston caliper per wheel end• CTIS upgrade if desired at no additional charge