I remember the article in Car and Driver. It was originally a one-off fully police-spec wagon that the Corvette team abducted from Chevy R&D.
Who decided a tree in the middle of the pic was a good idea?? Since they're all Fords in the picture I would say it's a Ford wagon?? My guess is maybe around an '81 LTD?
This picture was taken at the 1979 Street Machine Nationals http://www.hotrod.com/events/coverage/1431-how-i-survived-the-1979-street-machine-nationals/ Here is a bigger view with the Ford SW :