We were lucky enough to recently find a decent 80 series, complete with front and rear lockers. It is a higher mileage rig, with 245K miles, but at 15 years old that’s not too bad. The truck starts well, has no leaks and only minor seeps from the front. I don’t think the lockers have been used much. The Center diff lock position switch was faulty and needed to be replaced to get the whole locker system working. I found the info needed at Slee Off Road. If you are looking for any info for your 80 series or some cool custom parts, Slee is the place.