The page says "any PCD" which infers they do a bolt on version as well as the k/o wheel. If so then I'd expect the bolt on version to have a totally different centre and probably it would have the hub cap studs as well.
This comparison is from the Elan manual and it's hard to see how they'd get a 3.75" PCD studs/nuts in the valley of the k/o wheel - Lotus didn't manage to !
Brian