[Vintage 68]

The 'assumption' that just changing you wheel stud from the original 7/16" type to 1/2" makes them 'much stronger' is not correct
Size of the stud is maginally involved in their failure during use.
Both sizes actually have very similar and comparable tensile strengths in dynamic applications - so ANY properly sized (which the 7/16" are ...), correctly installed and non-fatigued studs will work just fine in any racing application.
As an example of the 1/2" ARP stud (since that's the size you gave) vs. a 7/16" ARP stud - they have the exact same documented tensile test ratings. So even ARP isn't going to state one is 'stronger' than the other just due to added cross-section
btw - they have about 90~110Klbs (each) 'Shear' strength, important in drag and competition high shock use - I doubt you could ever load a good 7/16" stud set with a 3~4Klbs Camaro sufficently to snap a set off

The reason a stud fails is seldom the load on it - it's almost always due to fatigue-cycling due to repeated wheel mounting and dismounting.
This causes the bolt to be repeatedly stretched during re-torqueing which results in fatigue of the material.
This is the reason failures began to show-up in competion once routine tire changing began. Earlier cars often used one set of tires through-out a race, changing only if a tire failed.
There are routinely 5~10 tire changes in a 400~500 mile race in NASCAR today - requiring special dry-lube to go a full race without gauling...
Yes, some racing sanctioning bodies require a "Standard" wheel stud size - but the rules state it's for standardised inspection reasons (they are spec. type, thread style and strength) and interchangablility - Not because they were "stronger"...
And - most I deal with these days require 5/8" studs min. anyway, to cope with the larger required lugs.

I'm not planning to change my ARP studs to 1/2" for a street/mild performance driven vehicle so these lugs would be just the ticket
Now it just trying to find a set of wheels I think would complete "the look" they provide