I installed a Borgeson steering box into my 70 Challenger. Very happy with the result. One choice you will need to make is whether you you get the large or small sector version. This relates to the pitman arm that attaches to the steering box output shaft. These had two different sizes of spline. Generally later years used the large sector. If you are going to keep your current pitman arm, you will need to work out which one you have, and buy the same sector steering box to suit. Or, if you are replacing the current pitman arm, you could do what I did, and buy the large sector box, and a new large sector arm to match.