Woog, Below is a screenshot from an electronic copy of a 1960-66 Factory Assembly Manual. If I understand correctly, I think Item# 5 - Bracket GM# 3843821 is what you seek??? Hope this may be of some help.
~ Dan 1951 Chevy 3 window 3100 Follow this story in the DITY Gallery "My Grandpa Carl's Truck and How it Became Mine" 1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver) US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)
