My '57 has 1/4 inch for the entire brake system, I had no problem matching the 3 hoses, double check the line size.


1957 Chevrolet 5700 LCF 283 SM420 2 speed rear, 1955 IH 300U T/A, 1978 Corvette 350 auto, 1978 Yamaha DT175, 1999 Harley Davidson Softail Fat Boy