70 BH WINDSHIELD DEFROST AIR DUCT SLEEVE (?) MISSING **HELP**

[70 Grand Coupe]

I will attach a pic below of the missing sleeve (?) or piece of cardboard that goes between the heater blower to the dash defrost vents. I do not know the proper name of this part, nor can I find it on any of the parts sites, I.e. Year One, Dante, Moparts etc. I appreciate your assistance. Ciao.

[anlauto]

Nothing is missing, it's designed to have a 1" gap to allow cabin air to mix with blower air.

[mopardave]