Yep, those are them...supposedly the '85 Cali models have trap oxidizers? I thought those were only on W124s though...

So I went today and drove both the NA 300D and the turbo 300D. The euro one I actually was kinda blah about. I drove it and it was still torquey and had no trouble in real world, California driving situations. I still liked the punch of the turbo though.