Need a few parts for my '90 80Q

[David Miller]

    Just doing a quick overview of my car and I noticed I'm missing a few
parts:

I need the interior lower covering on the passenger's side C pillar.  It's
triangular shaped and, at least on my car, matte black.

I also noticed when I was changing the oil that I'm missing the underneath
protective valence (not quite sure what the technical name for it is).  Is
there any real point to having this thing?

There aren't any junkyards for me to go picking throug here, and I've had a
lot of bad experiences with online junkyards when fixing up a few of my
friend's cars.  But I'd take a recommendation of a good junkyard from which
to get these parts as well.

One last thing, where can I get replacement Mann/Mahle oil filters for my
car in bulk?

Thank you,
David Miller