Ok well the 72c is a good trans. I see your point,you would defenetly have to shorten the shaft
Ive seen them behind 6V53 Detroits n they hold up.
Ok on sticking with what youve got,have you checked to see if you can change the BWs input rotation by just moving the thrust washers from front to rear or vice-versa,I know on big trans thats what we do.
Just for curiosity.Do u run the the spring torsional coupling on the 72C or a centa or vulkan?