I think I'll be using the rectangular Euros -- they have the vacuum pods in them still, while the rounds have had the pods removed. I'd like to hook up the vacuum lines so I can raise/lower the beam if I'd like.

That'll happen in time -- right now I'm chasing down vacuum issues.

Good luck in your search for a nice W123!

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1992 300D 2.5T
1980 Euro 300D (sadly, sold)
1998 Jetta TDI, 132K "Rudy"
1974 Triumph TR6
1999 Saab 9-5 wagon (wife's)