727 vs. 904

Yes, it's the /6 with the 727. I know the swap from the 904 to 727 in the /6 Valiant wouldn't be a problem if I ever needd to, but the ? was the 727 to 904 for the truck. I'm guessing that the 727 is the best bet. I'll just look for another 727 with correct bell housing or a tailshaft that I can swap out.