After thoroughly reviewing my engine manuals and parts book I have been unable to find any mention of anodes. I did discover a hand written note stating "Air Pro says no zincs in engine, none necessary". I also spent time climbing around in the engine room and did not see anything that looked like an anode for the heat exchanger. I am going to press forward with the assumption that this T6.3544 does not have pencil anodes in the engine unless I get hard evidence to the contrary.
Thanks for the responses, and I hope this helps someone else in the future.
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