You will see much improved acceleration and top speed. However, as said before, you will also notice it not slowing down as nicely for a landing. you will have to pay more attention to your airspeed on final aproach. Be ready to chop the throttle earlier, and then feather the throttle as you bring it in.
I remember when I took the trainer prop off of my alpha 40, and it took off so fast I almost lost it. The acceleration difference was astounding.