Should I take the ACT as well?

<p>I have a 2130 superscore (640 cr, 770 m, 720 w) on the SAT. I also plan on taking the SAT Subject Tests. Should I take the ACT as well???? Or should I just concentrate on the Subject Tests? I am shooting for Penn next year and they accept the SAT + 2 Subjects Tests or the ACT. What should I do??</p>