67-69 Barracuda Notchback “Rear Air” Defog Vent

I've seen these before but only on B or C bodies to accommodate a speaker AND defogger. I'm curious how they split the outlet tube to accommodate two flex hoses to two of the outlets ducts - all the rest have a long thin single outlet duct in the middle of the package tray.

I can print a "Y" in about 2 hours...