Let me make a suggestion..
I would remove the aluminum from the rod journal with muric acid as I've read on this forum and then polish it well. You can go aftermarket or factory on rod. I would use factory and get someone to machine it for bearing inserts which are from a continental engine ~15 bucks for the inserts.
Aftermarket rod will work only with old style piston- not the Mahle.
I'd measure where the score marks really start- if they are only where the skirt runs, you can just hone it lightly. It's the area where the piston rings travel which is of concern and even there a few light scratches won't hurt.
Good luck!
Michael
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