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I have a set of 20" Viscera EMR-506 chrome wheels on my 2006 Ford F-150 and I've lost one of the center caps.  I've called some local (houston) retail stores and they have all advised me that Viscera no longer makes this type of wheel...thus no center cap available for purchase.  Does anyone have any advice on:

1.  Are there other Viscera center caps that would match my wheel
2.  How can I locate a used center cap

Any help or direction would be appreciated!

Thanks!  

http://www.automotix.net/used-center_cap-custom_rims.html  
Josh
http://www.simpletire.com

I was wondering do you still have the Viscera 506 center caps or were able to get a like set to fit your rims; if so where did you find them???