1999 5.2/46re into 1974 Duster?

Been searching on here for some answers but still have questions. What I have is a 1974 Duster that was a 318 car with an auto. My daughter had a 1999 Dakota with a 5.2 with a 46re 4x4 tranny, cracked and bent frame. I found a intake manifold from Huges that will replace that ugly turtle shell they call an intake and still use the injectors. Oil pan and exhaust will come off a 1970's valiant engine. Will simplify the wiring but still use the ECM.
what is required to put the 46re into the car?