hey im looking to turbo my b18a soon and i was woundering if the oil pan could be drilled and then plugged until ready to finish the project. im going to be swapping a new motor in thats why i was woundering if i could drill and plug it before i drop it in. thanks!

 

they make plugs for AN fittings so yes assuming you'll be using that style fitting

 

You can do it, but I would wait until you hang the manifold/turbo off the motor to get an idea where the hole would best be.