I don't know how different yours is from an '02 but I just use my Torx bit and remove the entire grill front. No big deal, I've had mine off and on so much in the last few months ( Painted Duplicolor Anodized on the insert, then install air intake using PVC and finally removing the entire front facia to install front tow hooks) Not at all difficult and the insert should just snap on into the Grill, from behind and just reinstall your front grill.
Here are some helpfull links:
http://www.jeepkj.com/forum/showthread.php?t=28672
or :
http://www.jeepkj.com/forum/showthread.php?t=26156
Hope this is of some help.
