It's a simple cost analysis. I have to agree with @newchevyman, it's not something crazy exotic. Supercharged LT4 engine has been out since 2005 and the find one that has had all the services completed like you would normally with a used car purchase and your going to be good to go! I have seen CTS-V with 50K+ miles on the LT4.
If you are that worried, by insurance for it (extended warranty).
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