Found this on Nexus Mods, and it blew my mind that this would even be possible. So cool, and runs great. Just wanna share it for those that didn't know about it like me.
Mod that combines Fallout 3 and Fallout: New Vegas
This edit will also create new pages on Giant Bomb for:Beware, you are proposing to add brand new pages to the wiki along with your edits. Make sure this is what you intended. This will likely increase the time it takes for your changes to go live.
Comment and Save
Until you earn 1000 points all your submissions need to be vetted by other Giant Bomb users. This process takes no more than a few hours and we'll send you an email once approved.