TTI/Eddy Sealing Problems?

340sfastback: If you're heads are port matched like Abody hotrods up there, it appears that the header sealing portion of the header is blocking a significant portion of the port.

I don't know why people don't just make them the way the good Ford stuff is made, with just a flat flange at the cylinder head. Doesn't leak and you don't have these BS issues.

I'm putting a Magnum engine in my Dart this winter, and now I'm worried about this issue. Unfortunately, I have a whole TTI exhaust system sitting here, but I'm highly tempted to order the Doug's just to see what they're like.

Does anyone have a part number for Doug's headers in a 71 Dart with a 360?