Gen II fuel pump upgrade

[Grizzly]

hey all, I'm looking to put a dry shot of nitrous on my Gen II 30-40hp fueling and nitrous will be controlled by ECUeditor' nitrous control. From what I have read I will be close to needing a better fuel pump at around the 40 shot mark. So my question's are what pumps have you guys used and where can I buy one? how easy was the install? was it a direct replacement or were mods needed?

cheers, Grizz