68 barracuda trim removal

Individual pieces of the rear window trim are rare indeed. Complete sets are seen on ebay . Very expensive though. Have a professional show you how to use the trim tool. Finding clips and picking at them is not the best way.
With the tool held in the correct position you can rip it along and pop the clips like buttons on a shirt. I've never had a prolem removing drip rail trim either. The right rolling twist and slight tug away from the car does the trick.
I'm afraid you will look back and wish you had spent days removing that trim and hired help too. Good luck