Mine has folding seat back and sliding adjustable seat base on the front seat. I just recently added the required cable for the rear folding seat back. When I bought the plane, the sliding seat was in the rear(with no holes for the cable attachment) and the non adjusting "rear" seat was in the front. It had the holes for the safety cable attachment.
After verifying that the seats met the AD requirements, I swapped the seats and added the safety cable to limit the movement of the rear seat back. However, I used quick clips rather than cotter pins so I can take one end of the safety cable loose easily if I need better access to the luggage compartment.