My car isn't a a big corner carver but I figured this crowd would know the best.
I have reproduction magnum 500's on my 67' Belvedere. The wheels where balanced with a lug centric set up (the tire shop claims) I have a vibration that starts about 60mph and gets worse with speed that I think is wheel related as only the steering wheel really shakes. As magnums really have no hub that makes contact on the wheel I can't even try hub centric adapters.
Do you find that hub centric wheels make a big difference in this regard?
Lug centric is fine as long as you step-torque and tighten them down before the wheel is on the ground.
I'll run mine down with the tire off of the ground with a light drill-driver. Step them all at ~30ft-lb in a star pattern. Then final torque them with the wheel on the ground.