Low peak oil pressure

I thought we were talking about the actual external filter housing. My block is tapped and plugged.

View attachment 1716234272

View attachment 1716234273
Nice thanks for the pic and clarification. I was talking about the adapter and you were talking about the actual filter housing. My concerns are similar though and if I ran one, after blocking and tapping the mount on the block, I would definitely be doing testing on whichever one I bought.