wedebrook,where did you see this?
wedebrook,are you referring to the ones that run horizontally along the side of the car? i thought you meant something that went along the edge of the door vertically....
basically your two only options here are going to be:
1. buy them new from GM
2. Find them used at a junkyard or from someone else with an impala that doesnt want them.
i dont see much of an aftermarket for something like this.