Engines - How many have the Duramax?

Just the one Big Max for me! The wife’s Navigator might get swapped out for something with a baby max. Have some friends with them and they are amazing on the fuel mileage and the get up and go.
 

2025 AT4X Babymax for me...plenty of torque for what I tow and really liking the 26-28 mpg when not towing!
 

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