There are wheel accessories listed on the Alcoa Wheel site:
I've been trying to find the cheapo chrome caps for my front hubs at a truck stop or a chrome shop. I've seen the nut covers for $0.59 a piece at Flying J before.
Are you looking for a complete set (front, drives & tags)? My drives and tags are SS but the fronts are chrome and look terrible....a new set and nut covers all around would really spruce things up.
If anyone out there knows where to get these I'd like to know too!