1967 Barracuda Slant Six to 440?

Thermoquads from 440s are not easy to find. I probably should have grabbed the one I saw recently. I might go back and see if it's still there. It might make a good "parts" carb for my 79 Power Wagon if I ever get around to stroking the 360.

Are they taken off 440's and used on small blocks then?
Thanks! :-D