With the use of the HRC PGM and HRC flywheel you can alter the ignition for each cylinder as well as the overall ignition timing via the HRC stater back plate.

My motor uses quite a low compression, I gain midrange power by having an advanced ignition set up that then retards just after peak power to give over-rev. The lower compression also helps the peak rev ceiling.

I've used the Zeeltronics/Ignitech units on RGV's but never on an NSR. To the most point the stock PGM seems to cope with most engine modification well and doesn't suffer with the hole/dip the RGV's tend to have in the midrange.
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If I have to take the carbs off once more...