My '57 Buick has original 364 & Dynaflow. The Dynaflow needs a rebuild, and for that matter so does the 364. Question. Can I utilise a '62 401/Dynaflow, and retain my torque tube setup. I.e. I'm wondering if i can swap the output from my dynaflow over to the later model one. Converting to an open drive shaft seems a very expensive option, when i have just spent major bucks on the '57 diff. Anyone know if this dynaflow swap is posible? or alternatively, has anyone made an adaptor for the torque tube to a Th400?