I have an aftermarket 3rd row in my '95 trooper. It has worked great, but it only has lap belts.
I think that isuzu offered a factory 3rd row in later models? Are the seat belts better? Can a 10-13 year old fit in them?
I ask because both of my troopers are well over 200K miles and I have been looking at a Sequoia or Armada, but it is hard for me to get the troopers out of my blood. So, if an '01 or '02 trooper would work for my family I think I will go in that direction. I just need functional 3rd row seating to stuff the kids in.

1987 trooper LS.'94 3.2, SAS,35's , lots of dents and rust. Now, improved, with more dents.
1995 trooper LS. Wife won't let me improve this one.
1996 trooper. I'll need something to modify when the '87 finally rusts away.