I didn't know but they still make them new. http://www.customwheelsdirect.com/html/wheels_brand/American_Racing_Vintage_Wheels.php
The Tire Rack is selling these too. Sometimes they are cheaper and sometimes they are not. I have not been looking at prices. The way I see it, looking for one wheel can take forever. It may be worth the cash to buy one new and get it right away.
I left a link in the vendor section that has some NOS factory aluminum wheels. I think they have just a few. It is a very cool link. I looked at every page. http://mmb.maverick.to/showthread.php?t=54173