Fuel restriction w/ 6an line?

Ok my question is.. well I have a fuel restriction if I run a 6an hose from my FPR to my carb.
My setup (from the fuel cell to carb)

10an fitting w/ 10an line to filter
(From filter to pump) 10an fitting w/ 10an line to holley blue fuel pump
(From pump to FPR) 10an fitting w/ 10an line to holley FPR
6an fitting w/ 6an line to 6an banjo to edelbrock 1407 carb

I'm running a 383

Should I run a bigger line from the FPR or would I be fine with a 6an.
if it was a big holley, I`d say run a 06 to each end of the carb w/ fuel pressure at 6.5-7. had that set-up on a 600 horse chevy, w/ 1/2" line to reg., worked fine.-bob