Engine Change_need help
 

I have a 1989 F-350 Dually it has 460 MFI with automatic overdrive trans. I want to swap the engine witha 1973 model460 I rebuilt a few years ago. Will the intake and fuel injectionfrom my 1989 bolt on to older engine and work?
If not and I go with carbaration will my automatic transmission change gears? I don't think it has a mod.valuecomputer changes gearsI guess.Or what mods. will I have to make to do this swap.