N42 Block Crankcase Fitting Replacement Options

[Flak280z]

Have an n42 block without a crankcase fitting on it.  What are the options to replace this besides dropping $100 on one on ebay?

 

Using search, I can only find one picture where someone on here replaced it with an AN fitting, but no sizing.  Is it hard to remove one from an old block?

[A to Z]

I removed the pipe from a block with a pipe wrench.  Put the wrench on close to the block so as to not crimp the tubing,  Strike the handle of the pipe wrench with a hammer, then push and use a pulling motion as you push it around, it will eventually come out.  When re-installing put a piece of wood over the front of the pipe and use a hammer.