It may be too late, but..
The first thing I would do is pull the t-bar and see if the bolt will come free. Check the front bolt too. If they come out, you are half way there.
I had to replace one rear bushing on my desert car because of a stuck bolt and it turned into a I hate isuzus day for me. I finally got it done, but what a battle!

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.