It will run exactly as it does now with electronic ignition.
The plugs will last longer, the bike will be easier to start esp in colder weather and you may gain some high rpm benefits, maybe some more torque and most likely some mpg improvements too, which is just from the engine doing what its supposed too but better, but real world hp you can feel. Nope. Not really.
Don't get me wrong it will be a nicer bike to use, and definitely more reliable if you get a reputable kit and fit it well but it wont actually go faster in any real sense, people usually get a 400 engine for that bit.