Well, I bought one.....

The 78 Magnums were offered with a 400, but the biggest you could get in the 79 was a 360. I had a black T top car with dove gray leather interior loaded out with accessories that was a sales manager's demo. I stripped off all of the HP robbing pollution stuff including the 904 lockup. I put an 8 3/4 B body sure grip in it with 727, Edelbrock 4 bbl intake & a 700 cfm Holley, MDS ignition & MSD 6 AL box. It was an excellent DD until I got bored with it, sold it & went back to 60s & 70s Mopars.