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2012 Ford fusion SEL
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Discussion Starter · #1 · (Edited)
If I swap my 3.0 to the 3.5 will I have to change the harness cause my SEL has every option the sport has except its a 3.0 not 3.5 has heated seats blind spot sensors everything just a smaller motor obviously I would have to change the pcm I believe
 

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Plan on swapping the transmission? How about the EPAS for the hydraulic steering? Just eyeballing the wiring diagrams for both side by side and knowing where things are on both engines, I think it would be a significant undertaking. Personally I think the transmission, depending on what way you go, would be the toughest part.

Having done a 4.6 SOHC to a 4.6 DOHC swap in a vehicle, it is always the thing that you don't know about that is the toughest, and could get you in the end.
 
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