I currently have a stock fuel sending unit which is 5/16 in my 64. I’d like to update it a larger size, I’m undecided if I should go to 3/8 or 1/2. I currently have a large volume Holley pump and ran 1/2 fuel line from the pump to the regulator. My motor is a 505 with 2 600cfm carbs. I know I could purchase a 3/8 but haven’t seen any 1/2 units for the 64's. What do you guys do if you want 1/2? Do you cut out the original line, bend up a new 1/2 and re-braze it? Does anyone know if I could I save some time and just purchase a 1/2 sending unit for my 64? Maybe a 3/8 is ok, any thoughts?