Wheel help

Hi,
Usually I work with plastic models, but now I've been asked to convert a 1/18 auto art MGB into a replica. I've got most of the conversion figured out, but am having problems with the wheels. Does anyone know of a source for 1/18 slotted aluminum wheels ? Almost every aftermarket wheel I can find is for the "Dubs" style cars, but this is more of a vintage project. Here's a sample of the type of wheel I require.
http://www.akhwheels.com/pages/images/akh070.jpg

Thanks for any help you can provide.

measure the wheel and try an R/C shop, like HPI and they might have them....