67 barracuda fastback front/rear window weatherstrip

One really doesn't need to look far or specific to gain knowledge on rubber window gaskets. Never were more than 2 types used by any mfgr. From Peterbuilt tractor cabs to MG Midgit.
Most OEM 68-69 a-body gaskets are the 1 piece self locking. I've seen a few 2 piece over the years. Those have separate black rubber lock insert. Both of those designed to fit underneath stainless reveal moldings. All 67 a-body gaskets are 2 piece in design. The big difference is the lock insert piece also mimics the shinny reveal trim. The component name, "locking insert" doesn't ring the bell in so many minds. Owners shouldn't rip it out of the gasket and toss it no matter how degraded and ugly it becomes. To do that causes water leaks into the cabin.