Eastwood makes a stencil kit for the rally II wheel for $8.99. They worked pretty good for me, I let the paint dry for a couple days before doing the silver and i didn't have any paint peel.
part #10191 for the 14" wheel mask part #10192 for the 15" wheel mask part #10001z for the silver paint $8.99 part #10003z for the charcoal
Not sure if the paint is an exact match but it looks pretty good to me.
1969 350HO, 60.000 orig miles http://www.allaboutspeed.com BB dedicated to all forms of cars restoration and performance.