You have no choice. The frame determines the headset, not the fork. Some forks will look better with integrated, some with non-integrated, but the frame must have the type that it was designed for. Most likely you can tell just by looking. If the head tube is perfectly cylindrical, that will take a non-integrated headset. If the headtube is bulged at the top and bottom something like a gentle hour glass shape, that takes an integrated headset.