Not a Mopar, question for header gurus

Yep...the tubes must be attached somehow. If the external attachment is reasonably solid, no issue. If not, big issue.

The quality of how it’s built is more important than the way it’s built.

I don't have pics but I saw some of his, the external welds are really nice, he got a good deal on them even though the brand is generally considered higher-end for those cars. "Goodwin Racing"