Looking for Intermeccanica Mustang wagon, last seen with NY plates about 40 years ago

his was the cover car on Car & Driver when ad man Barney Clark owned it. It wa built in Italy atop a regular Msutang for ad man Barney Clark. It was dark green and had the optional chrome "rallye" wheels. In some pictures it says MUSTANG across the tailgate panel and in other pictures that panel is bare. It has the optional "trumpet exhausts.
There is a picture of it on the net looking a bit scruffy

http://assets.hemmings.com/uimage/3526439-1000-639.jpg


In one picture it has plate Y4030
in another
4N5600, the latter a New York plate.
I'd be curious to know what it sold for after Clark sold it, maybe it was in ads in Competition Press or Road & Track. I think if fully restored it could go for a lot but if it was left rough it could look like some Joe Blow custom.