You're WAY too picky. Take off the round flange type oil pan and put on a later pan. But DON'T under any circumstances mess with those numbers.
Just hold it until someone comes along who needs EXACTLY your now spare engine - do him a favor and give it to him telling him you're paying it forward.
We all need more good things in our lives - and this can be your gift to someone else.
Not turkey. More like phine pheasant - or maybe quail.
Joe K