Here is my issue - steering box adjustment 72-450

[meltedpanda]

So I have a little play in my steering car seems to be wondering a bit at speed and the play in the steering seems to be part of the issue.
I have new tie rods, sway bar idler arm bushings. I figure the box needs a tweak.
Some PO or perhaps original there is a long 6MM rod that comes up past the exhaust manifold that goes into the adjusting screw . I think - great , good thinking on someones part however when I try to get to lock nut , it is impossible, no room. And the rod does not come off so I cant snake a 19mm socket down there. My engine is either sitting too low ( the mounts look good) or something is amiss
Has anyone ever seen this set up, or had a lock nut they could not get to?
any options?
When I was under there I noticed the steering damper to be of old vintage. I am going to replace, any specific brand suggested?
From what I see it may be my only variable to change out.
Also I am wanting to get both front wheels off the ground , to test the play while running - suggestions, these daggon cars are so low to the ground
edit -
now that I am thinking about it my idler arm bushings may not be new - is this a PIA job?