Thoughts on Fuel Line Size

5/16ths fuel line seems to be pretty much standard on most Chrysler vehicles. The 67 Charger I've recently acquired has that size line as well. Since there's no motor or transmission in it, I've going to use what I've got available to me and that will be using a rebuilt and slightly upgraded 58 392 Hemi in the Charger. I suspect 5/16th fuel line was probably used for that motor back in the 50s. Would you stick with the 5/16th already in the car or upgrade the line to 3/8th?