I'm not sure I can answer your question 100%. However when I replaced the starter on my 2.0T/Tiptronic this past winter there was only ONE store in town that had them in stock. They had one for a manual and one for an auto. I didn't have time to check the differences then. Anyway, point of the rambling is to call the parts store and ask them to put their hands on the one they have in inventory. I went to three different parts store that either showed stock online, or through a phone call, and they "couldn't find it" when I showed up. Even the dealership pulled that mess on me :(
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