The carb'd 300 is 122hp @ 3000 RPMs and 255tq @ 1400 RPMs.
They're also known to be power drained by auto trannies.

However, it'll definitely pull it. It's a low end torque "diesel-like" gas engine. Just not all that fast.

As said above, regearing would help a lot, as would some performance mods. And agreed on the 10 - 15mpg.