340ci vs 360ci engine

Scratch what I said. I found a stock 340 Rallye (73) and Im just wondering what the gas milage is? If I get it I plan on doing a mild build because I dont need ALOT of power right now because well... I cant really use it. And it will kill gas milage too. And gas aint cheap. And I gotta pay for it too... If the 340 rallye falls through then i also found a 360 SE. I also with I had a A body cuda (73 or 74) Love them too... But they cost too much.