JBran, a couple suggestions would be make them out of rear duals that come in the kit, the pictures below shows how I did mine using a drill press and hobby saw. Even though mine were for SS's on a driven steer axle they would work on the rear axle just the same. I wanted painted wheels anyway so cutting them wasn't a problem.
If you want aluminum get a hold of Steve at IHB, he should be able to fix you up with a set.
http://www.rctruckandconstruction.co...splay.php?f=64
Paint the color of your choice
