Do a search, I did a thread on this a year ago. I bought coil-over shocks from Strut-masters.... I replaced the springs with sedan springs because the sedan spring are 10mm taller (woooo), but they are thinner gauge...(benefit most likely a wash) I did some rigging to make the shock ends fit under the cargo area trim panel and I have driven the wagon about 1,110 miles so far.
My findings: a little bouncy and the rear will bottom out when you hit big pot holes or take RR crossings at speed. I managed to sell the used suspension parts for about the same price of the coil-overs, about $300.


Now I have a much better TD with a properly working rear suspension, the ride in the newer wagon is much better....

I'll be putting Rudolph up for sale soon as Brutus is my new restoration project.... I might be interested in some of your suspension parts...

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Over 21 years I owned several:
w108
w110
w111
w115
w116
w123
w124
w126
w212