Yep about there all the way across. The double raised ribs running across the valance pan are a tell tale for the assembly line workers to help line it up with the trunk floor edge. These things were crudely built with 1/16" to 1/8" being close enough. Put your overlap right above the bottom ribs running across. Mask off for your seam sealer when done. Apply your sealer, smooth it out, and peel the tape while its wet for a nice sealant line. It will hide right under the back bumper.
