Dakota 'shorties' in early A ??

Here's an article that demonstrates the capability of the 340 manifolds:

http://www.hughesengines.com/TechArticles/10408416strokerdynotestingsept2002.php

The ones used in this test were extrude honed but still 439 HP and 397 torque at 5800 RPM is pretty decent for a street car. That's why I said, it depends on your top RPM>
Hope this helps???
Treblig