Stop in for a cup of coffee

Looking for defrost vent hoses for my 66. WTF. no one has the correct size hoses. On a 66, one end of hose is of a larger diameter then the other end. NO one has this.....Ant one find the correct hose?
You could just get one of these and use a 2” hose.

2 Inch To 2.5 Inch Duct Hose Adapter