V6 to v8 help

I have a 2003 Chevy silverado with a v6 5 speed. I wanting to keep it a 5 speed and like to keep it drive by cable if possible. if I can't I need to know what all I need to change and idk on what year harness I need. I'm sure there is already a post about this but I can't find it. Any help would be appreciated thx.

And I guess I put this in the wrong spot

There where v8/5 speed trucks made. So that's an option.

4.8l but still v8s. Why didn't you ask dude lol