How much time is involved, on the smaller W123 chassis? The FSM says to remove the 'cooler and fan'. By 'cooler' does that mean the entire radiator? Ie so I can just work straight through the front.

Price-wise, I seem to be finding about $30 for the seal and the spacer ring. Does that sound about right? Anything objectionable about the brands Febi/Elring? There were some cheaper seals, but they seemed like they were less durable materials.

I see a 'kit' and instructions from Mercedes Source for $75 total, and that seems a bit outrageous. Especially when I have the FSM (and these forums).