First off, Welcome to the site, you will get your answers here. Second, a suggestion; you should edit your first post a bit, one word really as this is a family site. You need to head over to off topic to use that language and still you don't see that word very often.
Now on to your dilemma, I have seen at least one other truck in person running a 4.6 and he was happy with it and a fabricator by trade. Adaptors will be necessary regardless of what you run if they are not stock. Even stock had some different transmission to transfer case parts depending on what transmission you were running and the year.
Wasn't there a 9" under it already or was it sitting in the woods with no axles under it?