push though bullet caps on my 68 caddy?

i am trying to figure out what the diameter of my center hole on my factory wheels are so i can buy the correct bullet caps. i have a 68 Cadillac deville. i don't want spider caps because im going to buy a set of bullet lugs and then the caps. i see some on ebay that are 3.30 diameter and 3.125. which one is it. thanks

 

I went with supreme bullets I believe they are 3.125 and my wheels were 3" centers. I had to do some grinding to get them to fit.

 

hey mike i just emailed you. i ordered mine without reading your email correctly. i got the 3.30 od caps. do the even make a 3.00?

 

If they do I didn't find em....