Where to get bullet caps?

I need a set of cones with threads inside so I can bolt them to a hubcap. I can't seem to find them anywhere. I used to have a set but for the life of me I can't remember where they came from. Any help would be great.

 

One source.

http://www.thenightprowlers.com/NP-Grilles & Stuff.htm

 

PM wheel kid here on the Hamb. Him and his Dad run Rally America and will set you up!

 

Summit sell the repop bullet(shannon)cones cheap