Are you talking about emulators in the R style forks, or valves in the SE/SP forks? The SE/SP forks come apart just fine, no cutting required.

The SE/SP forks have just as much potential with the stock valves as the Race Tech valves do. It's kind of like jetting in a carb; you need to know how to shuffle the brass in a carb to tune it, and you need to know how to shuffle the shims on a valve-stack to tune them also. Buying the Race Tech valves is like buying a pre-jetted carburetor. And I seriously doubt they have enough R&D on an NSR to have obtained a really good valve stack for these bikes.
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Paul Herr
'88 FZR4/GSXR/YZF Frankenbike
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