Sorry didnt mean to sound like a dick. Thats probly misleading info on years since the heads change in design. Swapping the plenum did require a new fuel rail and I see the adapter kit doesnt include it. Not sure what car thats from but assuming the B16 Sentra. I didnt happen to notice the bolt pattern was different but the snout was. You can ask 2j to include a fuel rail or just get one from a dealer or junkyard.
For fuel rails, I think its just one of those things that doesnt get B15 support. But you can always tap and thread a hole on it. Thats what alot do