'71 Dart 6.4L swap progress being made!

Does this still apply if you have classic auto air with a cable operated valve in the heater line? Seems odd that classic wouldn't have addressed this.
Actually they've been working with their engineers - this seems to be an issue with more than just the Gen 3 Hemis - the LS and Coyote engines are also having issues with the flow routing, and specifically modern engines being under a much higher working pressure. One of the test cars blew the hose right off of the fitting (clamp pressure was not enough!)

I'll let you know as I hear more.