Yes Curtis, they're supposed to be a dull black - not quite flat black - so satin or semi-flat finish works.
So it's supposed to be done in satin (not semi-gloss, which is too shiny), & if you've lost the undercoating "heavy eggshell" texture, you can reshoot it with Wurth Shutz (TC'sGarage.com can get it for you, just ask Tom or Bev by their email/contact us). If it still has the texture & just needs a top coat, then the satin black would do.
I'm not sure how SEM's satin black comes out, but theirs or any other automotive top grade paint will work, just buy a can & shoot a test patch on some smooth white cardboard.
The same finish was used on the F & R steel Valances & the targa top.
There are a couple of good "how to" topics in the O&H by Moderator Pat G. & a couple of others on how to get the Wurth shutz texture right, & again experiment on the cardboard. You'll have to use the search here or google for it.
The passenger side tend to get more dirt up behind the rocker panels, because that's the curbside where dirt gets thrown up into the crevices. Clean & wax them as noted above, before you button them back up.
IIRC, someone one here has a source for the black plastic rivets to reattach them, if you do a Query for them in the Garage (Porsche still sells the milky-clear ones too).
Good Luck!
Tom
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