Quote:
Originally Posted by jwgn777
Are the letters (AT) at the beginning of the number? have to put dye on it it's hard to read. If the engine is original in a 911 would it contain a part of the vin like a GM vehicle does?
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Engine number would appear like this: "M9603AT66565082" The "AT" stands for "Austausch", which means "rebuild" engine.
As with most things, Porsche uses their own numbering sequence logic.