hoping

Hey i wanna be able to accelerate faster, on my 2013 fz6r. Also wanting to try and start to wheelie if the bike will be able to. People tell me i should go with a -1/2+ sprocket, i guess Im hoping for a better answer than "i think" lol any suggestions would be appreciated

I have a stock exhaust that im gonna cut and im going to get a slip on like what Marthy was offering. Basically I was hoping someone could shine some light on how to make the reducer from the stock pipes to the slip on. Thanks!