They work fine on mine with '75 upper control arms. You will also need the proportioning valve from the same donor car and change over to a dual master cylinder for disc brakes. Your master cylinder pushrod will work if you have manual brakes. I used a '74 Charger master cylinder to get the smaller bore for a lighter pedal. '73-'76 is the year range for donor cars. You can use your lower control arms. Hope this helps.