OK so one of my friends finally got around to purchasing a Crossfire. Nice vehicle in Graphite with 47,000 miles on the clock.

Drove it today and heard a squeaking noise from behind the driver's seat. When I look at it closer I realized several plastic pieces are cracked (whatever the reason might be, beats the hell out of me). I assume the crack comes from there.
What would you guys suggest doing here?

If you look at is you see there's a small piece missing in the plastic piece around the seat belt assembly (see picture). Then, the screws holding in the trunk panel are all broken (where do I get these screw and how much are they).
Same panel extends to the seat belt plastic cover and is severely cracked on the underside as you can tell from the pictures.

I guess this isn't really a problem but just not nice to look at nor does it sound well to hear the squeak from behind the seat.
Appreciate any help with this to make this Xfire spotless! as this is the only issue I could make out, not factoring in the cloudy headlights he is getting polished at Sam's club this afternoon!

Thanks guys you help is always welcome.
Nick