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1981 Ralt RT-4, serial number 209, Sold Sept 83 to Tom Ballantyne and build into C Sports Racer.
Info from http://www.ten-tenths.com/forum/showthread.php?t=80369&page=5
Photo from the mid- to late 1980s. "SCCA club racing at Willow Springs Intrenational Raceway. Sports racer leading a pair of Sports 2000s through the esses." from http://www.flickr.com/photos/11308754@N08/sets/72157616644039576/