straight 6

Hey all, I seek a little technical information. I have an 84 f150 300 i6 2wd 4spd, all stock. Going to install newer efi exhaust manifolds. I have looked and looked for info on what mods need to be done for this to work, but haven't found the info. I try to do all the research I can, so I don't ask a redundant question Any info is greatly appreciated.

Hope this is the right area to post my question