Hi,
Those are two totally different engines. The 2.5 V6 is a Mitsubishi engine. The 3.5 is domestic. There is nothing the same.
I shouldn't say it can't be done, because anything is possible. However, absolutely everything will need to be changed, transmission, wiring, modules, mounts, vacuum harnesses, and the list goes on and on.
If you have other questions, let me know.
Joe
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Thursday, August 4th, 2022 AT 6:02 PM