Actually I would stay away from them. They dont fit very well. The one I had wouldn't stay down so the needles wouldn't move. I would look for a factory white gauge little more but better.
If you insist on them here is one
http://cgi.ebay.com/ebaymotors/White...Q5fAccessories
http://cgi.ebay.com/1998-2003-Ford-R...item58866f5dc6
http://cgi.ebay.com/98-00-FORD-EXPLO...item53e5519a54
Here is a factory one
http://cgi.ebay.com/ebaymotors/1998-...Q5fAccessories