from what I've been told, the SR can take 500hp on stock internals, I could be incorrect, though. Resonably I would say 350-400, remember this isn't a honda, it is a purpose built turbo engine, nissan designed it to take alot of beating, and the fact that it came turboed stock makes me think 400 is easily attainable, but I wouldn't suggest it for very long <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt='
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