I have a 2018 Expy XLT Max with the max tow and 4x4. It has a 150 amp alternator. I do a lot of towing a camper and want to add a 60 amp DC-to-DC charger for lithium batteries I am installing in the camper. I am looking at using a Mechman 320 amp alternator. Mechman does not have any suggested alternators for the newer Expeditions likely due to lack of demand. However, they do have alternators for the 3.5L F150 through 2019. My question is would the F150 3.5L alternator be compatible with the Exy. Mechman suggested it would have to be compatible both dimensionally and electrically.