This is what I started with:
I pulled the vinyl and foam padding off and scrubbed them up. I was amazed at the condition of them. They have only very minor scratches and after a coat of wax, shined up like new:
Before & after:
I pulled the dash off and it is nice and shiny under there, I'm leaving it metal. I painted the vent grills black - I'll get some pics up when I take some.