73 340 Fuel Pump to Carb Line!

Hey all
What size was the line from the fuel pump to the Thermoquad from the factory? I have not ordered my pump yet and I am seeing 5/16 for 64-76 A body and 1/2 for 73-76 A body. If I have too I could go dig out the Thermoquad from the storage, but I am hoping someone on here just knows. Thanks.