2G Evo OEM FPR question

[PlanZero]

What are the benefits of this swap? I know the evo fpr is designed better, just looking for feedback from people who have done it. And will an evo 8/9 fpr directly fit on a 2g fuel rail? I have an evo X fuel pump installed already and plan on eventually installing 650s with ecuflash.
And a total noob question, how would I know if my stock fpr was being overrun? My a/f ratios are good; not sure if that matters.

 

[Dsmkauai]

Not sure about the evo fpr. Why not just get a fuel lab or aeromotive afpr. Got mine from classifieds on here for a killer deal was bnib. That way you have full adjustability and will have a gauge to see where your at. Cuz that's basically he answer to your last ? You need a gauge.