How would a replacement engine affect "numbers matching" on a C7 or does that only matter on cars like a C1, C2, C3, etc.? Maybe it really doesn't matter, but I think I would want my numbers to match. So, I think I would have Chevy and my dealer fix whatever problem there was with my engine rather than replace it with a non numbers matching engine. Also, lets say a few years down the road I want to trade in my C7 on a ZO6/ZO7, or a ZR1 should there be one, how would a non numbers matching engine affect trade in value? I don't think I'd want to get into a situation where I have to explain why the numbers don't match. If Chevy wants to replace the engine, I think I'd insist Chevy make my engine number match the rest of my C7 if that is possible. If not, I'd make GM fix my engine.
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