Evening Mike,
Yes my March Minx went via eBay in July 06 - perhaps that was the one you saw. It had a very interesting history and the chassis was the 19th off the line. Hillman only built about 700 Aero Minx over the three seasons (I think) before doing a bit of badge engineering and putting a Talbot 10 body on the same chassis.
This image of my car was taken in 2005.
Mike Stubbings has sent me this image of a March Riley - the body of which he re-constructed. The flattish section to the top of the front wings is a Freddie March trademark as are the glorious curves - a work of art!