Like vt_mav said, there's almost always some on ebay.
I did the same thing, took about a 1 1/2" chunk out of lip when I was off road in Moab....have no idea when it happened. Bought a used one from a member here.

I assume you have 18" on your 2000.
Here's a few, including a BRAND NEW one.

http://cgi.ebay.com/ebaymotors/18-IS...s#ht_500wt_714

http://cgi.ebay.com/ebaymotors/18-IS...#ht_1341wt_752

http://cgi.ebay.com/ebaymotors/64236...Q5fAccessories