I just finished this job on my 89 4 cyl and 2 floor jacks worked well but you will need help to re-install safely. I was able to get the tranny out and the clutch replaced alone but felt there was no way to safely line up and re-install alone.

As a safety measure I also supported a boat winch through the shifter hole and winched the tranny straight up. I also strapped the tranny to the 2 floor jacks. Once everything is up and lined up with the pilot bearing the floor jacks made it very easy to just slide forward and bolt it up.

I wouldn't even consider pulling the engine for this job.

Randy