Though not Boss specific I thought I would share
Currently going through the Boss - freshening up the car after 20 years of limited driving and installing the original engine after all these years.
Car is a fairly early (first couple of weeks of production) car 4/24/69 real build date. 30K something miles (though repainted) always Calif car.
Will add some more pictures as time goes by
Upper A arm date stamp - Looks to be C9 (March 69)
Disc Brake Dust Shield - supplier and Ford Mark (hate how blasting leaves a fine pitted surface
will fix