No exposed sail panels....there are cardboard panels that are under the c-pillar(sail) area of the headliner...the only tack strips are the ones that surround the rear window. Otherwise, the headliner just glues to the parcel shelf area where the pillar and shelf panel meet, and also to the roof pillar at the quarter windows.
At least this is how my '68 GTX and Satellite parts car were.
I think the Road Runner may have been different.
I hope I understood your post....