1974 charger

alright so my name is Devin i am a young mopar freak in progress ( i only have one). the car i have is a 1974 charger that came originally with a LA318 and 904 transmission. right now i have a 1972 360 that came out of motorhome that i am putting in the car and would like to know if there is anything special i need to do to pair the 904 to the LA360, only other option i do have is the 727 that came with the 360 but obviously will need shortening. any advice or reccomendations?