Just want to say that a aluminum headed 408 is much lighter than the 440, and that makes the car drive better, and faster when you are talking the same power output.
Hell I wanted to put in a vintage Hemi, but packaged mine with a high output 408 for the win.
Like for like, stroked LA vs stroked B with all aluminum everything is less than 75 lbs difference. The big block has more head flow and more cubes, bigger power potential.