This is my old RX4 that I bought as a project around 2002 and then collected a bunch of parts for it over a few years. It came from a "U-Wrench-It" type of salvage yard in St. Louis and was being stored in south-east Missouri (Cape Girardeau area) when I sold it in 2005. All I remember is that the guy who bought it was from Tennessee and thought he was buying an RX-3 (he told me a friend of his "had one just like this, except his was an 'SP'"). His name might have been Herman or Harry.
It's not much to go on, but maybe someone has seen it?