James,

Can you measure the width (height/depth) of the central hole (parallel section) which locates on the drive flange please.
The center section has to be machined if they have been fitted to a three door Sierra, I have several sets machined but am looking for un-machined centers might be able to do a deal.
Strip the paint of the magnesium centers and get them crack detected as they are very prone to cracking where the spokes join the rim of the center section.

Thanks

Steve