im looking for a tailgate chrome strip for a 1982 el camino

gmpartsdirect.com gives the following info

part # 20498749
GM LIST: $136.79
OUR PRICE: $80.71

ebay seems to list new ones for about $120 or so. Old ones seem to depend on how scratched and dented they are.

I'm looking for the same part, but for my -76 el camino.
Does that have a GM parts nr ?
Who sells them in the US ?
Anyone got a spare, 73-77 will probably fit.
http://www.farfarsfavoriter.com/~oskar/list.jpg