Here's what i did, years back, for a customer of mine, that wanted, or needed, longer wheel studs for his 4 piston, Kelsey Hayes, disc brake set up.
Guess when i did this, longer 7/16 diameter studs were, unobtanium, dinosaur eggs, hens teeth, in locating too.
I got the brainy idea of using longer 1/2 diameter studs that would be used, and work on the 70-72 B & E body cars with disc brakes.
I brought over to my machinist friend of mine, an old disc brake rotor, and hub, from one of those B & E body cars.
He used those to get hole dimensions to to drill out the A body rotor and hub to use the 1/2 inch diameter wheel studs.
Worked great. Longer 1/2 studs were easily findable for disc brakes when i did it.
But i haven't a clue anymore what manufacturer would still have them, now a days.
So, if you don't mind using 1/2 inch studs, and lug nuts, that would be an option for you, to go that route.
A lot stronger that what the factory ever had with the wimpy 7/16 inch studs.
Just my two cents on the subject.
Jim V.