Buster the 74 Duster

I picked up Buster back in August at the Mecum Auction in Harrisburg. I am an absolute newbie. I caught the bug to work on cars at 52. A late bloomer for sure. I wanted to work on something that would just need refreshes and not an intense restoration. As I learn more from Youtube, web sites, and forums like this, I see there is so much support out there that I could do this myself.

The motor is a 340, which I understand wasn't offered in 74's. I do not know any of the history of the car...