the 360 is externally balanced and they never put an A904 behind the 360, they always used the A727. to use a 360 with an A904 you would have to have a specially balanced torque converter.
Hmmm..... I have a '78 Cordoba donor car and it has a 360 904 combo.
I've seen vans with 360 904 combos also.
At the old Chrysler Corp they did make use of just about everything in everything. They didn't change things for the sake of change, they just found new ways to use what they had.