My 422 smallblock build

I’m in the house now but are you talking about the tubed side. I’d so it gets tapped for a pipe plug and set up so it is FLUSH with the block or countersunk some. If I remember you drilled yours 5/8 inch right (1/2 inch house copper pipe). I drill mine 9/16 and used that stainless pipe I found. I block my oil a little different than you did. I tap the front of my galley with a 5/8 set screw that blocks the oil feed hole instead of doing it down on number one main.