I am in the process of a PI swap atm
I just got back from my buddies house where my car is and I read about oil plugs from the NPI heads need to be moved to the PI heads( 03 mustang GT), I dont think i moved them over. Since they are used heads shouldnt they already have the oil plugs in them? or do I need to transfer them over?

I wont be able to go look till next weekend if they have the plugs

 

I didn't swap an plugs over on my used set of heads.

 

NO you dont, don't worry.

 

when i bought my set of (new to me) npi heads the guy told me there were complete. meaning nothing was removed. well i had to relocate 2 oil galley plugs and one was missing. didn't find that one until the startup and i immediatly lost all oil pressure. found a mess under the car when i checked. the guy must have taken off a galley plug or it fell out somehow. thank god it was the only galley plug that could be reached without taking everything apart again. i would have lost my mind.

long rant, but morral of story is you should alway check and check again to be completely sure.