I believe good used is all that's available unless someone knows something I don't...which is entirely possible. They are available for B and E bodies, but I think A bodies are SOL for new stuff, as Harry Callahan would say.
Ive looked for those as well. I found one on ebay in Connecticut but nothing local. the whole idea was just to get an idea on price before I saw the car so I can determine if I need to adjust the price buying it.