1968 - 1969 Plymouth Barracuda 2 Dr Hardtop - Rear Window Self-Locking Weatherstrip Seal, Works With Chrome Trim That Inserts Into Body Clips. This rear window seal is for the 2 door hardtop (fastback) models only. It's a self-locking weatherstrip seal that works with chrome trim that inserts into body clips. Made from ozone resistant EPDM rubber and from the same OE specs as the original for an authentic fit and finish.