That's awesome squid - glad to hear it went well! How do you like the feel of the sport version?
Though a little late for advice, I had a friend try Gabriel's on his '74 240D and that car trashed the Gabriel's: in little over a week they were leaking and very bouncy - felt worse than the orginal bad ones he was replacing!
Even though the '74 240D and your '89 Coupe are very different cars, the Gabriel's just aren't robust enough for heavier Benz's I think.
'95 E420 - 'Shadowfax
'92 Volvo 740Turbo Bard
'74 240D - 'Ol' Green
' 4spd Manual 104kmi. (sold
'77 300D - 'Red
' 223kmi (sold)
'75 240D - 'Bianca the Blue Bomber