/6 727 Driveline use??

My 68 valiant (4 door) turns out to have a 727 behind my slant six. I didn't even know they made 727s for a slant six. Aparently it's out of a van.
I am wondering if I can keep this driveline for my bb swap????? The 8 3/4 I am going to use has the small carier.

I assume I will have to have the yoke on the rear changed to fit the new rear end but will the front fit a bb727 and hold for the extra power?