This is a direct swap for the original unit, can be done by anyone in five minutes, and makes the bike much easier to ride at lower revs. It is already set up, no need to change any settings unless you want to tinker.
FCR carbs are flat slide type, the standard carbs are CV type. Flat slides are much more responsive to throttle and certainly make a difference when riding hard. CV's may not be as responsive but are more economical.
You won't get much value from flat slide carbs without a better flowing exhaust such as the Akrapovic 2-1 system.
Once you start on this path you find you then want:
Better brakes, which is never a bad thing and is an easy mod
Better suspension, not as easy but some fairly simple alternatives
then... more power! and you end up like Cobba, building a race engine for a street bike. Not that that is a bad thing