Q: Q: Will a 4.0l engine and AWD 6 speed automatic from the 2007/8 Pacifica fit in the 2005 Pacifica?

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I told my mother I want her Pacifica when she gets a new car, so sentimental value for one, but I want to swap out the 3.5l engine and FWD 4 speed for the 4.0l engine and AWD 6 speed auto from the newer model. Since the 05 Pacifica didn't come with either of the 2, I have been trying to find out if they will fit in the older model Pacifica. I have found AWD 4.0l Pacificas, but are not like the one I have now. If anyone can help me with this, I would GREATLY appreciate it, thank you.

My car has 223500 miles.
My car has an automatic transmission.

You cannot use the engine and transmission combination in your vehicle. Your vehicle is not AWD and the two computer systems are not the same. The two have different wire harnesses. Different body designs lead to changes in engine cradle changes and the list can go on and on. I recommend not doing this swap.

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