[3tas4me]

The pic I sent you of the ‘75-‘81 seat is the bottom of the drivers seat. Both seats have the narrower track set up for the ‘75 on up seats. So, to answer that question, no, the ‘74/‘75 drivers side tracks won’t interchange as a set. The track with the release lever for both seats may be the same for ‘71-‘81, but the other track is definitely not interchangeable with the early tracks.