Daniel - Just curious (I know it can get a guy in trouble - lol), but did you omit the two large circular notches towards the rear corners of the outer flange on purpose?
Otherwise everything in your rendering looks "spot-on"!
~ 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)