Durango hemi and $>&?

well, being that the 5.9 is a larger motor, without a hemispherical head im sure it would fit. I have a 5.9 in my Ram and i've looked into swapping a hemi...and its not easy in my truck...so im sure it would be about the same if not more in yours. Not to discourage you...its very possible. Beef up the suspension, hemi ecu, fuel system, new power steering, and several other smaller things will be needed. GOOD LUCK!