5.9 slt plus Durango donor for 74 duster

The transmission will need a B&M flexplate if your donor vehicle doesn’t have one you can modify by, IIRC, A single bolt hole. (I didn’t have the OE Magnum flexplate.)

You will also need a older distributor if you plan not to run the computer. And intake, carb, etc....
And a electric fuel pump. I used an Edelbrock “Carb” electric fuel pump, which does not require a fuel regulator or return line.

It is a simple super easy swap.