The 1969 Fisher Body Service Manual indicates that sacrificial zinc anode clips were originally installed in the rear window channels on Camaros (not convertibles). See Section 17, pages 5 and 6. In my work, we employ catholic protection on major highway bridges to reduce internal steel corrosion, so I am familiar with the concept. However, I cannot see that the anode clips would be very effective in this Camaro application. Cannot think of one owner who has routinely replaced clips as they corrode, nor anyone who has installed them during restoration. Anyone know otherwise?