The extra torque would be felt in a street car. Less gearing and converter needed.
That being said I would be ashamed if my 410 only made 8 more hp than a 367.
Sounds like the cylinder heads weren't up to the task.
It's not only the cylinder heads, but more so the intake manifold. I don't recall what those heads flow out of the box, but that intake only flows 220-230 out of the box and those cylinder heads definitely flow more than that.