ok guys so i have a 57 f100 with a 272 i wanna throw in a nice rebuilt y block but i dont want a manual truck any more this truck is my daily driver work store u name it so i want something that wont hurt my wallet should i rebuild a 272 and adapt a c6 tranny or should i build a 312 with a auto trans what are you guys views what are the good n bads

FORD IS LIFE OIL N GAS IS MY BLOOD