What size are speakers for a 2001 dodge dakota double cab?

My speakers are blowing out and need new ones, but I cant find out the size. 2001 dodge dakota double cab.|||Try http://www.crutchfield.com/S-n974V6P94fo鈥?/a> click "car audio/video and gps" in the upper left tool bar then click car speakers and fill in the blanks.|||ever hear of measuring?