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On all 66-70 B body convertibles the vent window frame is two inches taller than the non convert models..One could be C body as well, dont know too much on C bodies, but take a measurement to be sure..



IIRC, the 68-70B conv vent frame/glass/windshield are interchangeable with the 66-67B 2 door hardtops. That would suggest to me the 66-67B hardtops and conv have the same vent frame/glass. Partsbook would confirm.

The 68-70B hardtop vent frames are taller as noted and have different glass pivot parts (and glass holes) than the verts. I believe the 68-70B 4 door vent glass will interchange with the convertible. Pic is pivot for 68-70B conv.