All depends what you want. I’m not familiar with the WW rotors. We removed the stock rotors and I installed new bearings and seals in the mustang rotors. I didn’t see any clearance issues with the rotors or calipers. We have the 17” Campi wheels on our car. I do remember there were some alignment shims to help center the caliper on the rotor you need to watch for. Just be sure the rotor is fully seated on the spindle and check your centering. As far as the lug nuts go it’s your choice if you want them different front to back. It’s only a matter of time before you will get them mixed up unless they are different shapes. Most auto parts have a press in the back take the new rotors and have them push out the 1/2 inch studs which generally have a 9/16 knurled spline. Be sure you ream the holes square thru the flange (a good tight properly set up drill press or Bridgeport) no hand drills. Ream them up to the size required for proper press fit the 12 mm metric spline body to fight the tightening torque to hold the wheels on. Take them back to the shop and have them press them back in. You can flip an open lug nut over and pull them in that way if you can find a way to hold onto the rotor.
Thanks guys. And I appreciate what you're saying Larry. I have read as much as I could find and was aware of the thickness issue. My intention was to find new rotors that could be used with the Wilwood 6 piston calipers that SACC is now offering. I could just call Scott and ask him. 
If you have newer Wilwood calipers I am quite sure they will accept the thicker rotors.
but the summit rotor previously posted is in all likelihood a one piece casting and will present the SAE versus metric stud issue for you to resolve
Larry
Remember, photographs seen with online listings are often generic or outdated.
If you are seeking the thinner early mustang rotors you should search for part number BD60208
If you are searching for the thicker, later mustang rotors you should search for part number BD60209
I have been there and done that on replacing all four rotors on 2511. I followed some inaccurate advice and purchased four BD60209, the thicker mustang rotor.
I still have two of these available.
As these were purchased quite a few years ago they are the two part assemblies. I do not believe the later mustang hub is correct for the Pantera spindle, but as these are the two part assemblies the disc can be removed and attached to the Pantera hub, thus retaining the metric wheel studs
Please send a private message should anyone be interested in purchasing these.
Larry
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You all do realize that 12mm is smaller than 1/2" so no reaming needs be done. The lug bolts actually press into the hub and when I put the mustang rotors on my car I just pressed the original lug bolts through the rotor and into the hub without doing any modifications to anything.
Hi the issue is not the actual size of the threaded portion of the stud. You are correct 12mm is smaller than the 1/2 inch equivalent (12.7mm). I did find 12mm studs that would not lock in the stock hole of the rotor. The issue that requires sizing is the matching of the spline below the threads that prevents the rotation during tightening the wheel. I’m happy to hear that you found a stud that matched with sufficient interference to change from inch to metric. I was not that lucky and had to ream the holes to change from 1/2 inch to 12mm and achieve the correct interference.
Check with Larry at Pantera Parts Connection Reno. He sells Porsche Brembo rotors that have been machined to correctly fit our Panteras.
https://www.panteraparts.com/store1.php#
welcome to panteraland lmao
The stock metric Pantera wheel studs PRESS into the Ford hubs and rotors. No reaming.
Good to know thanks!