Hello everyone. Just logged on to see the latest discussion on spoiler hardware and noticed I mistakenly called the nuts "Kelp" nuts. They are called Kep Nuts. I failed to mention that the Kep nuts are also used to secure the window regulators to the inner door and rear quarter panels. If recall correctly, the front window regulators Kep nuts are the same ¼-20 size as the spoiler.
If anyone has any sort of Fisher Body Assembly Manual (not the Chevrolet final assembly plant manual), please let me know if the rear spoiler and window regulator hardware part numbers are called out.