Since we've had some discussions lately non this and related subjects thought I would fix the earlier PhotoBucket photo and add some more reference pictures I've collected related to 70 San Jose Mach I side cladding black out practices
Guess we'll work front to rear
From 0R114xxx Fender black out applied with brush
0R135xxx brush used to apply black to the froward edge of rocker panel and front fender
One more example
Another example tanked from a lower angle. No attempt to black out the rocker panel under the door opening other than the standard pinch weld black out applied to all Mustangs
Another 70 San Jose example showing the rear quarter panel and rear rocker sprayed with black paint.
0R135xxx quarter panel and rear rocker application fairly sharp straight edge from likely masking
These along with the picture posted in should provide an idea of how the black out was done typically during 1970 at San Jose. Hope they help