Torque and horsepower are the 2 measurements of power that give acceleration (which is not power). An engine can not have more power to accelerate than it did stock without having gained power, and with an increase in one (hp or ft/lb of tq), 99% of the time you'll have a marked increase in the other, you don't have to pick one. Should that power go up, the engine will accelerate at least a little faster, unless having added the power makes it so you can't control the power and you just sit there spinning the wheel, but that's a different story with several factors that you don't need to worry about.