1969 1/2 A12 fuel and vent line question?

What size fuel line did the ‘69 1/2 A12 cars have and did they just have a vent line that ran up through the trunk and back out or do they have a vent line that ran up to the front of the car too?

Mine was replaced before I got it because it was raced but I am told they only had 5/16 because they were pulled off the line as 383 cars.

Mine was raced also so it is missing. The 383 fuel line seems logical but does anybody else know for sure?

My car has the original 5/16” line.

The vent loops up in to the trunk.

Been 38 years since I first took it apart but if I recal the separator returns to the tank, the vent runs up to the trunk and back out either in to the longitudinal or the shock cross member area.

Same set up as a 383 car. 5/16 fuel, 1/4 return.

D