In a Sunbeam Tiger Owner's discussion there was talk about using a shorty filter instead of the hassles of a remote mounted filter, but they stated,
To use the short filters you will need to use a shorter 1 3/16" nipple (the threaded piece that screws into the block). Ford used to carry these. The part number was D7AZ-6890-B which superceeded to F1AZ-6890-B. I don't know if they still sell them.
I have never heard about this short nipple or the need for it if running the short filters, like the WIX 51335, and NAPA Gold 1335. I'm running the short filter to clear my steering box, but did nothing to the mounting nipple that was in the block. Does anyone know why this would be necessary?