Slant six transmission in a v-8 car?

I have a 66 barracuda, the transmission is giving me trouble. It looks like I may have to get it re-built, however I was planning to put a v-8 in my car before spring. Is it possible to swap bellhousings, so the tranny would mount up to my future v-8? I don't really want to rebuild the tranny only to have to ditch it in a few months?

Robb