When I adjusted my steering box I used a crowsfoot wrench and a universal joint at the end of my 3/8" ratchet extension. Its a little tricky to work that way, but the alternative is taking the exhaust manifold off.
1986 560SEC: 150,000 miles, runs great, but I've got to sell it (too many cars for one man)
1987 560SL: 122,000 miles, used to run poorly, now (thanks to forum), runs great!
1997 GMC Jimmy: Turned out to be a turkey.
1989 T-Bird Super Coupe: 150,000 miles, still runs great. Ford got it right.