Welcome to the forum, WindyDrew! (EDIT: oops, would I look at your join date??
)
It's great to see a Volt owner doing something interesting.
Does your Volt have the full depth air dam or the shorter one?
See:
http://ecomodder.com/forum/showthrea...dam-19923.html
I vote for rear fender skirts as well. It's possible to make attachment brackets that "pinch" the wheel arch, so they're completely reversible and don't require drilling. That is, if the arch has a lip to pinch.
See:
http://ecomodder.com/forum/showthrea...metro-103.html