Has anyone heard of a 68 1/2 production run?

easy way to tell is '68 has a lower dash pad '69 does not
mine does have the lower dash pad. still looking for the core support and trunk rail stamps. may be removing some paint this weekend. does anyone have a pic of the exact stamp locations. it sounds like it shouldn't be too hard to find, but i'm just not seeing them. thanks for everyone's help.