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How do you know
that the material is rod or main bearing material?
If the bearing is the problem, it could also have damaged the material it rests on I presume. So you may have a damaged block. And do you have access to someone who specializes in the internals of Porsche motors.
I've seen many messages on various forums from people who had installed used engines successfully. And some from people who had awful experiences.
The problem you will always face is that to reduce risk costs. Just as Jake's completely rebuilt motor costs more than his cpo because it addresses more problems, so down the chain a motor with just the LN bearing addresses one problem but may have one of the other weaknesses or had problems when you got it. And a motor with a guarantee will often cost more.
That old reducing risks costs thing again.
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