If you can do without one, your engine will not complain. I put a short filter on my 367 with TTIs; lotsa room. Oil changes are a lil tricky but I can still do it in my driveway, with a bit of ingenuity..
If you don't want to wander junkyards looking for this part, I have the adapter, and the bolt. $60, including shipping. I think Mancini's has the gasket.