What engine would you build for a Ramcharger?

Guess it depends on what you are pulling. Thought it is to be a highway drive to work truck.
I admit, over the decades I have had mostly Big blocks, and I much rather had a 383 over a 440, I rather have a B body over an E body, and I rather have a 318 over a 360 unless i can have a 340!!!! I even like the little 273, but I admit I am strange. lol