ALDA!! WOW I'm an idiot....yes, I'm talking about the ALDA. No wonder i wasn't finding any search results!! Good call on the vacuum/boost line. I'll definitely check that first. I'm not in front of the car right now, but I think I'm remembering the correct line...is it the white-ish colored one? Or the other one on the side of it?

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1983 300SD ~250k