[LSaupe]

What holds these in place? Special lug nut, clips or some other method?

 

[Hat Trick]

Clips on the rim in between the lug nuts.
Tom

 

[El 1987]

I circled the tabs that hold mine in place so you can see how they clip on.

 

[calgun04]

If anyone is interested there is a place in Tulsa, OK called hubcap kingdom that sells full sets of these center caps for a reasonable price. Around $50 for the set. They are also on eBay. I know for sure they have the special edition and the classic bowtie.