Clarification and Measurement re: 1969 Barracuda Backup Lights

More fun with my '68 Bcuda Restomod project ... As some of you know, we've came to realize a few weeks ago the replacement trunk lid we were desperately searching for over a 6 month period in 2023 came from a '67. The aftermarket lower valance we ordered from Classic Industries is a 68/69 is painted and installed, but now needs cut-outs to accommodate the '69 Backup Lights since we will not be using the '68 taillights that have built-in back-up lights, as they mis-match with the '67 trunk panel detail.

Hoping one of you out there could respond back with: