mopar newbie

i recently aquired a 74 dodge challenger with a 70 nose. other than that its a matching number 318 with 70,000 mi. the down side is the previous owner made so many mods that i thinks its pointless to make it stock again. wich leads to my question. its and auto tranny but i dont know wich one. was the 727 tourqeflite the only auto available this year or could it be something else and how do i tell? any help would be great! thanks. i am toying with the idea of a 440 and i am unsure if my tranny can hanle it.
Author: stayonmyleft