Firstly, it's not an RGV, so I shouldn't be comparing what they did and trying the same with your NSR.
Secondly, I'm not usre if you've raced before, but having a bike which makes 80hp at 11,000 rpm and sod all elsewhere will have you spat off, going backwards or siezing at every race - unless you are a Doohan like God.
Keeping the powervalves will not rob you of a single horsepower, but it will give you bag loads of it over a much wider spread of revs, so you can get the gearing alittle bit wrong and still stand a chance.
Unless you're planning on swapping gearox cogs at everymeet so you can be in the powerband at every corner?
You'd be better optimizing the engine as a pretty standard setup, and spending money / time on your suspension and brakes. These will allow you to go faster than another 5hp ever will.
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