I can't seem to find an adapter for the engine block. I can make the new filter holder, I just need the sandwich adapter to add the hoses. Someone must have done this with a V6!
I'm not sure what the thread size is on the 3.7L. I am almost certain its not the same as the 5.0L (M22x1.5). I too was planning on this for when I go boost to I was going to install the oil cooler and an analog oil pressure guage. Issue is finding the right gauge adapter and oil filter thread pitch.
Doing a quick search for a Ford 3.7L sandwich adapter I got a few form Summitt Racing.