changed the inners on my '87 too.. It was a painful puzzle to figure out which direction to approach the inner ties with a wrench so as to be able to tighten it (and loosen it on removal) but just don't give up, try different angles, you'll get it. I went in from the top (via engine bay) in order to keep tightening the sucker. Just get it on their real good and do remember to use vise grips or whatever to keep the inner rack from turning while you're tigthening the inner tie rods, or else you could end up buying a whole new rack
If a stupid 17 year old ( iwas 17 when i did it) can do it, so can you!