What will I need to put my /6 in a truck

I have a /6 in my 75 dart sport that runs great. I have a 73 d100 custom that has a 318 727 combo that does not run so great. I tried selling the slant 6 but dont want to give it away so im going to use it and put the d100 back on the road. What all will I need to put that /6 in the truck while keeping the 727. bellhousing and motor mounts?