If you're only seeing 30psi of fuel pressure my first guess would be the pump and not the reg (Though I am no expert here)... as mentioned in your other thread I don't believe the reg is serviceable without replacing the basket... the pump, however, is serviceable... I sold my used OEM pump (just the pump, no assembly) on ebay for like $10. I also bought an entire assembly with broken hat from a wreck yard locally for $50 when I needed some odd parts off it. You could find something like that and swap your non-broken hat onto it - this solution would also replace the reg at the same time.
Brand new OE replacement pumps (again, just the pumps) are $30 on ebay... I dont know anything about the quality of them...just trying to give you options.

Keep in mind if you go the walbro route, you will have to do some additional mods to the basket to get it working. CJM sells a kit.

Sounds like great logic to me.

Personally, I wouldn't take the dealership's word for it (unless they were going to fix it under warranty). I'd check the fuel pressure myself or get a 3rd party to do it.

Thanks for the input - I'll see if I can find CJM's kit, was thinking of going walboro. And I might see If I can find a whole basket like you said. All I know is i'm just shooting parts at this thing without knowing what truly is the issue since nissan can't seem to give a 100% answer lol.

ANyone know if a basket from a 2016 Nismo will work haha? Or is it different in some way?

Should swap right in AFAIK.

Awesome supposedly found a whole unit with the Oem pump still in it from a 16 nismo for 80 bucks (scary cheap)... hope I can just drop it in. If it isnt broke or something strange it will at least rule out any issues from the tank if the problem persists.

If it isn't the issue you can probably resell it without any loss.