I already sent this to the e-mail box for the Hardibro, but...

A supposedly Ultra-Rare Aluminum Bodied 1994 Mercury Sable is for sale in Olympia, WA. I'm working down near Tacoma, but I don't really have the time to swing by and take pics (I could be persuaded though, Hardibro).

The ad only has 1 picture of the gauge cluster, so I can't say for sure if it is. It doesn't even verify that it has the SHO powerplant either, but still. If it's really an Aluminum Body Sable, it's a pretty rare car. Hardibro wrote an article back in 2010 on them.