Scott, They look good. I did not use the Krylon fusion for the panels but used it for the package tray and it turned out nice. On the panels I used original paint from the mustangs unlimited to get the color match. With regard to the scratches I used 400 grit sand paper and then cleaned them real good with windex. Then sprayed them and they look good.
Although it may not be quite to the "plastic" point, I have been using Krylon on windshield wipers (flat black) since my 91 explorer's started to fade at 1.5 years old. I don't know what cheap junk FORD was using to paint them, but the Kryloned wipers held up for the next 13 years. (Explorer is gone now)
I painted one of my grills nine months ago with krylon fusion and it has done very good. I also just redone another grill with the fusion paint and a set of kick panels. IMO Krylon Fusion gives you the most bang for your buck when it comes to painting plastic.
Mine looks pretty good. I think I will go so far as to paint the headliner, painted part of the dash, etc. This will all occur in the next week or 3, I need to get this thing back together and drivable...
It should hold up okay as long as you keep the sun off the top sides of them. The biggest problem you have with painting plastic pieces is when changing colors, if you scratch them, it's gonna show up bad no matter what you use. If they were black to begin with, you'll probably be happy with them for a while.
I don't use anything but SEM. On soft vinyl, I clean with acetone and use their spray prep before using the color spray. On hard parts, I clean with acetone, use the spray prep, the vinyl primer, and then the color spray. I've had nothing rub off, nick off, peel off, etc.
You can paint the headliner with Krylon paint? My interior right now is greenish beige from the factory and my headliner is near perfect. My plan is to switch it all to black. If I can paint the headliner, I'd try that...maybe. Don