Its a pretty basic parallel 3 link with panhard.
It works quite well at stock height. The short upper link starts to cause trouble when lifting, or if you are after big vertical travel numbers. It seems from my experience that the trooper rear suspension works better than the 4link that the later rodeo had.

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.