umm...it would help if you gave a year for that 240SX...but I assuming you mean the 95-96. Anyways the "late s14" is the 97-98 240SX or Kouki S-14...or whatever people call it....but its pretty close to that and...the side skirts and rear bumper..I'm assuming the JDM bumper will fit any S-14 (95-98).
As for the S-15...you think about that one <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/hmmm.gif" border="0" valign="absmiddle" alt=':hmmm:'> .....there was a thread not so long ago asking about that, in fact it was YOU that started the thread....
http://www.zilvia.net/f....t=16579
It doesn't hurt to check page 2 <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/dozingoff.gif" border="0" valign="absmiddle" alt='

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<font size="1">I'm too tired to ramble on.....</font> <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/sleeping.gif" border="0" valign="absmiddle" alt=':zzzz:'>