What is the actual diameter of the lug holes in a cobra rotor? Our studs have a 14.3mm knurl. Stangs have 1/2" studs. 14mm=0.551". If I installed studs with a longer shoulder I should be able to get a snug fit between the rotor and studs. The trade off would be swapping to 12X1.5 threads.
The though here would be bolt-on, no machine work, and easilr replaceable rotors (no redrilling).