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try BRS Parts, i saw their link on this page (mustang forums) with a picture of the center cap you described. Also, I've been browsing 2005stang.com and there is a thread titled "how much have you spent on your mods?" thats up to about 19 pages long. I swear I saw one guy list his pony spinner caps at $40, which is about 1/2 what I've seen them saling for at other places. Hope your not on dial up though...19 pages for one thread!