ok im right in the middle of building my first race engine/car and have a question on fueling.

my goal is around 750 whp my set up is as follows:

95 ls with gsr swap
block was built with 84mm darton mid's
ls crank and ls length manley turbo tuff rods
je 9:1 coated pistons
arp studs (head, main & rod)
calico coated bearings etc.

i will be doing the head work this winter but am currently thinking about going with s2 pro 2 valve train and just ordered a garrett gt4094r today (wallets feelin kinda light lately)

but as far as the fuel im a little confused as to where to go next. i currently have a str 3/4in fuel rail with an AEM regulator and a walbro 255 pump and the rest of the system is stock. i know i need to go with larger lines but what kind (hard line or braided) and what sizes do i need for feed and return, also what size fittings? i know the rail is taped for -an fittings but what do i need to connect the lines to the tank?
also what size injectors do i need? i was thinking about getting the edelbrock IM with the secondary ports on the bottom. would it be better to run a single set of injectors or run secondaries so i only need the big injectors for high boost (i forgot to mention i have an AEM ems). and what kind of injectors is better for this setup(hi or low imp.)

im really scared about leaning out (p.s. im running a small shot of nitrous to spool ) and want to do the fuel system the best that i can. i know its a lot of questions but any help i can get i appreciate

 

bump

 

I'm using 2 Bosch 044 pumps, -6 lines to each pump and then -6 from each pump to a Y block and -10 from there to the rail. -6 Return. Is it a street car? 1600's dont idle the best but honestly unless its your commuter car then who cares.

 

yeah it will probably see more street time than track but not a daily driver so im not too woried about idle as long as its not too ridiculous.

do i really need two pumps? and arent 1600's a little too big even if i only run one set of injectors??