I know this is way late, but I make my own cam bearing drivers. If you already have the Installing tool and have a lathe or can find a friend with one , even a small one, they ar easy to make.
Sorry if the pictures are not clear, it's hard to get the whole thing in the frame. 


God Bless.
Tim http://yblockguy.com/
350ci Y-Block FED "Elwood", 301ci Y-Block Unibody LSR "Jake", 312ci Y-Block '58 F-100, 338ci Y-Block powered Model A Tudor
tim@yblockguy.com Visalia, California Just west of the Sequoias