73 dart swinger project

hey everyone, i recently pulled the stock 318 out of this car, to be replaced with a custom 360 pushing round 400hp and 430 ft lbs i have not researched the tranny yet, i know i have a stock 904 automatic 3 spd. Will this work with the 360? honestly while i have everything apart anyways i dont mind waiting to find something better i just dont know what that would be yet.....i would like to have a automatic 4 spd with an overdrive any suggestions?