My 1966 122s Automatic just turned 196,000 miles. In honor of its approaching badge-worthy milestone (and because of some odd and mysterious electrical issues) I'm treating my Swede to a 200,000 mile "tune up". I'm wishing I could afford a full engine rebuild (according to my repair records she had one at 105,000 back in the early 80's) but that will have to wait for now.

I'm posting what I'm thinking thus far in the hopes that others will offer suggestions, or things that they have done preventativly that saved their bacon in the long run.

My 200,000 mile "tune-up":
Alternator upgrade (to AC-Delco ala SW-EM)
Rebuilt fusebox (and love to the various electrical connections)
Brake switch upgrade
Perlux electronic ignition
Take the radiator to the shop for some TLC (overheating even after flush)
New engine to chassis ground strap (mine slightly fishy)
Finally install the trunk seal I ordered last year
A nice scrub of the engine compartment
Plugs, wires, dist. cap, oil, filter, valves, timing, etc

Recently done:
Cleaned and tuned carbs (my new skill!)--of course will do again after
New brake booster set up ($$$ ouch!)
New thermostat
Heater core and regulator (thankfully done before I bought it)
HD Battery, rebuilt generator and new regulator (but still, strange electrical issues!)

As I list all this, I'm thinking brakes might be a good addition (not sure how one does this, but could probably figure it out.) I think I'll also pull out the old original glove box manual and the grease gun and hit the lube points they say to do.

What am I missing or what would folks recommend adding? I'm hoping I'll be taking her to 300,000, so I want treat her right.