Yeah, reflectors (I just said "side marker lights" to specify the reflectors I was talking about after saying reflectors... should have left off the "lights"... habit!). I just did some extensive looking around for info, and it looks like some '68's (trucks) had the side reflectors and some didn't. I never knew that and I don't know why some had them and some did not, if it was regional, package-related, or what. I do know for an absolute fact though that not ALL had them. Learn something new every day!
I wish I could find one that (looks) this solid up here.