THIS IS A NEW 1957-1960 CHEVY CAR, IMPALA and 55-62 CORVETTE TRANSMISSION CLUTCH FORK. THIS HAS THE RETAINER CLIP RIVETED TO THE FORK JUST LIKE THE ORIGINAL. THIS IS CORRECT FOR A 57-60 CHEVY WITH ANY SIZE OF ENGINE AND WILL ALSO WORK IN A 55-56 CHEVY AS LONG AS YOU USE A 57 CHEVY ADJUSTABLE CLUTCH FORK PUSH ROD WHICH WE ALSO SELL IN OUR STORE. SKU 7400