904 Extension housing gasket/help

Question:

Is a 1968-71 Dodge Torqueflite-6,904 transmission paper & rubber,(gasket & seal) kit the same for a 1965 Plymouth Barracuda 273/console shift?

Or differently stated, are the extension housings the same at the body/mating area?

I'm bummed out that the Transtar Super Deluxe Overhaul Kit for Chrysler TF6 (A904) 60-Up doesn't have a/an extension housing gasket or rear seal!! :wack:

Thanks Fabo