I GOT RID OF THE "JUMP SEATS" BACK IN 1980 WHEN A FRIEND & I ADDED THE ROLLBAR. I INSTALLED THIS REAR SEAT IN 6/09 & USED THE SEATBELTS FROM MY OLD 60/40 FRONT SEATS. THE SEAT CAME FROM A jeep BUT IT WAS GIVEN TO ME FROM A FRIEND WHO OWNS A 1978 FJ40.