aod aode and the 4r70w are all good ones but the aod and aode stock are slush boxes you gotta build them up a little to get it reliable. i found a adapter for the aod/aode on a fe here
http://www.ford-aod.com/ i havent found a crossmember that bolts in youll have to make one but heres a little help on that
http://www.mustangandfords.com/howto...r_lantech_aod/