1966 dart commando 4 speed id

My 65 commando 4 speed Barracuda is 7 1/4 and 9 inch power brakes including build sheet.
My 67 Hemi Charger is supposed to have a 3/8 inch main fuel line, but it's only 5/16. Car's been in the family since 1970.

They have what they're supposed to have most of the time, but sometimes . . . .

I'm pretty sure all V8 Barracudas in 65 were supposed to have 10 inch drums standard, but I can see an early one slipping by with 9's.