Tags real. What's holding it on the car? Is your car a December built car, or a January built car (previous reply says 012). Two fuel lines on small block cars were used with L48's and LM1's before 1/1/69 and with L48's after 1/1/69. Every other small block used a single 3/8" fuel line. Two fuel lines were also used on L35's and L34's during the whole production production year, but we're talking about a small block here.