Overdrive transmission upgrade

has anyone ever swapped out a 904 and put a newer overdrive automatic transmission in their duster/dart? I have a 70 duster that I'm putting a 360 in and it has an 8 3/4 rearend. I have a 904, actually two of them, that was in an abody originally. It is going to have a center console in it as well. Any help on what transmission will work or what needs to be altered would be awesome.