Pokemon Emerald: Need help replacing Intro and Title

Hi, I am about to start a new project and I need some help. I've done map editing before, but never anything with the intro or title screen. Basically what I plan to do is take Pokemon Emerald, and change the story to Ruby/Sapphire. After researching for a few hours, I've come to the conclusion it would be better to just ask for help from someone more experienced.

Here's what I need: I need someone to replace Emerald's intro and title screen with the ones from Ruby, and also from Sapphire. If anyone would be willing to help I would appreciate it!