I believe this guy can do it, I don't really care for the show part. If I were you and were importing an S15, I would be attacking track racing, but to each his own. Its great to be in on it from the beginning, even though I really don't knwo whats going on. By the time you finish your car, I will be satisfied with my car.
I just want to say concentrate more on the power than show. A good amount of power under the hood is a better show than 10,000 watts of speakers covered in indiglos.
Have fun with your car, and tell us more ASAP (price, HP estimates, tuner name, when you get the S15).
P.S. When you say fastest do you mean 1/4 mile time, or handling, its hard to determine the "FASTEST" car.
Also I still consider it a Silvia even if it is LHD, its like saying if you change your shift knob and steering wheel in your S14, its not an S14. <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/hmmm.gif" border="0" valign="absmiddle" alt=':hmmm:'>
EDIT:
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Quote </td></tr><tr><td id="QUOTE">all japanese car names are funk, i.e. "Silvia" "Gloria" "Aristo"..then all we get is numbers and shit.
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LOL so true, there is also Altezza (IS300), Soarer (SC300/430), Fairlady (300ZX), sure theres more I am forgetting.