This retrofit column is designed to fit your Chevelle, El Camino or GTO and does NOT require modification to your original vehicle to install. Simply remove your old column, saving your original under dash mount as well as the original floor mount. Using an IDIDIT installation kit, install your new steering column in place of the old. These columns come complete with a neutral safety switch, (shift indicator is not included) and feature an keyed ignition. The shift pattern on the column allows you to use either a 3-speed or 4-speed automatic transmission. A shift linkage (new or original) is required for installation and will attach to the lower shift arm provided on the column. Using an adaptor, add an aftermarket wheel and the gripping surface of the new wheel will be in the same location as the original.