2001 ford ranger 4x4 3.0 v6

[jpateranger2001]

i have a 2001 ford ranger 4x4 with the 3.0 v6 it's an automatic and has the 5r44e 5spd automatic trans i was wondering if anyone has a good used transmission or knows where i can get one for a fair price let me know or if you know where i can get a reverse band for it and also could anyone tell me if the reverse band for a 5r44e and a 4r44e transmission are the same any help would be greatly appreciated