The part number you listed (IF180-000) is for the original iPad front panel assembly, not the one for the iPad 2. That aside, though, you'll want to replace the entire panel assembly because you'll find removing the metal frame, clips, home button and integrated digitizer prohibitively difficult, if not virtually impossible. The last thing any iPad repair needs is more complications.
Replacement iPad 2 front panel (digitizer) is the touch panel portion of the display assembly. Compatible with all iPad 2 models: CDMA, GSM, and Wi-Fi only (EMC 2415) models. — 50+ available at 89.95 each.
Touch portion of display with the frame, home button and clips. — 22 available at 59.95 each.