Is it possible to swap a 3.9 out of a Dakota to a 2002 3.7?
Anything is a possibility
just as I may date Lady Ga ga someday , hey it is a possibility
But in the real world it all depends on how mechanical you are
How much you know about computers and getting two systems talking to each other
What transmissions will work and transfer cases
Motor mounts, fitment of accessories , what may switch over from the KJ to new motor
and a few other fitment issues
and then there is the big question, .......WHY ???
They only have 175 horse power so not really an upgrade