Rod and Main journals look the same. Four photos attached below. One photo shows the supplemental groove on #4 rod journal. The dull ring in the center of the main journals are the areas of the oil groove of the bearing.
http://i122.photobucket.com/albums/o...h/DSCF0707.jpg
http://i122.photobucket.com/albums/o...h/DSCF0708.jpg
http://i122.photobucket.com/albums/o...h/DSCF0709.jpg
http://i122.photobucket.com/albums/o...h/DSCF0710.jpg