put the normal motor back in it.
As others have said in the past, 4bt vibrate like crazy, smell like shit, don't make a ton of power.
being it's the wifes ride, I think she would bitch about the vibes, complain about the diesel smell, and whine about the power loss vs the hemi.
It would be cool, BUT not overly practical. Kinda like the dude with the 347 stroked Libby. Neat idea, but no longer overly DD'able.