Look at the rear tail light plastic - finding a good set is getting hard to find. Last I looked OEM parts group has not re-poped this part yet but it is in the catalog at GroundUp.com so I hope to see them soon.
FYI: Fbody Warehouse has a few in stock if you are looking for some.
http://www.fbodywarehouse.com/fbw/home.php?cat=33
$300, ouch!!!