main fuel line to primary rail 8an then out of primary rail to secondary rail 6an then out of secondary rail to fpr 6an then 6an out of fpr as return line sound right725cc primarys and 1300cc secondarys

 

Not only is it enough, based on power goals relative to your injector sizing i'd say its overkill. I can't see it hurting anything but 6an all around would be more than enough.

I think the general consensus is that stock lines under the car are good for 500 hp

 

"Im gonna give you an engine low to the ground... extra thick oil pan to cut the wind from underneath you. It'll give you thirty or forty more horsepower. Im gonna give you a fuel line that'll hold an extra gallon of gas. Im gonna shave half an inch off you and shape you like a bullet. Ill get you primed, painted and weighed, and you'll be ready to go out on that racetrack. Hear me? You're gonna be perfect."

Sorry.. couldn't resist.

 

^^^ That's a kick *** quote. What is that from or did you make it up?

 

lol. Its from Days of Thunder.