72 bucket seat tracks will bolt right onto the 70 charger seat frames. The 70 tracks may make the seats sit to high off the floor. If you do not use the 70 passengers side tracks, I am looking for some. I have a pair of 70 charger seats in my 71, with 71 se at tracks on them, and they fit perfect. The 70 six way seat frame is worth about five hundred dollars if it is in good condition, and working order.