Photo above is of an old transmission filter (on right) that I just took out of my 68 Dodge Monaco 500 (383 2 barrel) and on the left is a clean/larger (transmission kit) filter that I had sitting on my shelf.
The clean/larger filter is from a transmission kit that I bought for my 69-70 Fury several years ago but did not use. This kit also has two gaskets in it...one of which perfectly matches the pan on my Monaco 500. The filter has three mounting screw holes that match up perfectly and I do believe there is nothing in the way inside the transmission/pan for the larger/extra portion of the new filter. But obviously, the filter is lacking one trans. fluid flow hole.
Question: Could I carefully cut a hole in the new filter to match the location of the hole in the old filter and use this transmission kit...or would it just be a risk in causing a problem later on?