Volume vs Pressure

[red coupe89]

hello everyone.

been trying to find some information on a fuel issue im about to have. im up grading my fuel lines with stainless steel braided line and AN fittings. I currently have 5/16 lines and the issue im coming across is that 5/16 is quite un common in AN fittings. So im not sure if i should get the bigger 3/8 AN 6 line and have more volume and possibly a little less pressure, or get the 1/4 AN 4 line and have much more pressure and possibly a little less volume. I do have an upgraded walbro 485 pump so im inclined to go with the bigger line. also am running 925cc injectors.

thanks!!!

[DCaff300ZX]

Kind of dislike trying to guess as an answer, but in this case I think that I'd go the slightly larger route due to the upgraded components but also be ready for possibly adjustable fuel pressure needs since the VG30DETT is so finicky there...and I assume it's a TT?
I'd talk to a good known mechanic about this as well just to be sure, I use my Z guy Doug at Fairlady motors for these types of questions.