Yes, the drag racers received theirs before Indy 62, Labor Day.
Hayden Proffitt told me he received his in a wooden crate a few weeks before Indy.
A friend of mine helped put Dick Harrell’s front end on. The first time Dick ran his the tops of both fenders wrinkled. My friend said Dick yelled at him for denting them not knowing what had happened. When the Chevy guys saw what happened they increased the thickness before production of the 63’s. Having seen the Jenkins and Thunder cars neither appeared to have wrinkled fenders. I assume all 63’s received the thicker aluminum.
Lots of conjecture based on what I have seen, have never seen and production info, etc.