I met a man who have changed a111 car,63 250.Had installed 350 change rear 4/11 pos.Would smoke the tires.He was so happy with him self.I looked under hood,under rear.Turn to him and said you are a butcher. So we go to some back roads lots of turns and hills.I took my 60 190b kicked his ass he could not keep up.To much weight up front. Chevy makes good motors but do not run or sound or belong in a benz.