They used 'S' for the chassis name and 'X' to signify "sporty". Basically Nissan used "SX" the way that america uses "GT" to signify a fast and/or sporty sexy car. But both terms are outdated IMO. <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/dozingoff.gif" border="0" valign="absmiddle" alt='

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