Well, he said fender, not quarter panel, but it's the same. Federal regulations had the manufacturers put corner marker lights/reflectors on the '68 model cars. The front fenders of the '68's got marker lights and the quarter panels got reflectors. There is a difference in quarter panels as the early quarter panel has a surface mount reflector and there was an indention on the later quarters for a recessed reflector. My personal favorite look is a '68 with the '67 grille and fenders and the early '68 quarters with no reflectors and the scoop trim removed.