Here is some of the websites:
http://www.bmfwheels.com/wheels.html
http://www.mickeythompsontires.com/wheels.php
http://www.motometalcustomalloys.com/styles.html
http://www.kmcwheels.com/wheels/?siteid=3&groupid=36
http://www.procompusa.com/category.aspx?catID=11