As mentioned, either an aftermarket kit, or, the factory setup from a '64-6 A-body with the same engine as yours if you want to keep it stock looking. Assuming yours is a 273 with stock exhaust manifolds, you'll need: The small sector shaft steering gear with the correct control valve and fittings, pressure and return hoses, Federal/TRW type pump with the correct brackets and reservoir, crank pulley, belt, and a P/S steering column center shaft with P/S coupler. Some components can be from other years, but, not everything will work, and some mixing and matching can't be done. The '64-6 only items are the steering column center shaft, the 90 degree control valve fitting, and the hoses if you're going to use the stock pump. A complete set from a '67-9 small block will work too except for the steering shaft and the fitting. The small sector steering gear can be from virtually any '72 and older A,B, and E body. The pitman arm is the same between manual and power steering.