Everyone, meet Theresa

68 did offer body side sill mounding yours looks correct to the brochure. (But brochures can be misleading sometimes.)

Yes, sill moldings were available in two types for '68. The ever popular Custom Sill Moldings AKA "gills and spears" and the "regular" style.
Below are two pics I took of my brochure that show the regular type. It looks to me that these could be the style Theresa is wearing.

IMG_20220816_140753426.jpg

IMG_20220816_141326160~2.jpg