ka-t injector help

[s14fbs]

okay so i had a set of 500cc rc with just swapped out rc clips

now i have rebuilt my motor since then full forged and plan on running more boost then the 500 can handle

now i planned on doing either another set of rc injectors or a set of ams precsion injectors

now i have a few question

#1 s14 ob1 ka are high or low resistance ???
#2 what lb injector is closest to 750cc or 750cc

im just trying to find out if i need resistors
and what lb injector i need to be around the 750cc mark