These easy to install retrofit columns are designed to fit your GM Truck. The 1960-78 columns install simply by using your original under dash mount and floor mount. Use an ididit installation kit to install your new steering column in place of the old. Using an adaptor, add an aftermarket wheel and the gripping surface of the new wheel will be in the same location as the original. You can bolt your original 1973-78 steering wheel directly to the 1973-78 steering column, no adaptor required! Standard features include 8-position tilt, ignition, self-canceling turn signals, 4-way flashers, knobs levers, 3 7/8″ wiring plug, and a 1″ 48 lower shaft.