Heres the deal on what you propose. Swaping engines that heve never come in a certain chasis is time consuming and takes alot of work to make happen. I aint saying it can't be done but what is it you want in the end? I have put a Detriot V6-71 in a '78 Econoline van bofor but it aint easy and was done more as a joke than anything else but anything CAN be done. For what it sounds like you want to do you will need the motor, trans, ALL electronics, fuel tank, probly gauges, ect... Once you have the all of this in the truck you will notice that you have also lowered your truck all the way to the bump stops so you will need to build up your front end to handle the weight (Cummins and Powerstroke are about twice as heavy as a 460). Like I said anything CAN be done just think about what it is you wish to accomplish and the time and money involved you may see it is better idea to go with a different motor or different truck.

Either way you go let us know.