FOUND THE CROSS NUMBERS
Here are cross numbers for some of the oil filters that fit the Turbo saver. Wix-51060
Napa- 1060R
AC PF35
BTW- The data that came with the turbo saver describes the Baldwin filter as having the most filtering capabilities. Will order more Baldwins for the shelf. However, I'm not sure that many more filters wouldn't fit, as the face plate for the oil filter on the turbo saver is wider than usual.