Valve Cover Baffle

I have a set of Dave's fabricated aluminum covers for my BB. These come with one baffled hole in each to which I currently have a breather installed connected to my headers for pull. I want to add another hole in one for adding oil. My question - does anyone know of a pre-made baffle that fastens onto the valve cover without welding it on the inside? Seems like I have seem something that is two piece and screws together from either side of the valve cover to create a baffled hole without welding? Anyone seen these or where to get them? :confused:
Author: Stumper