These are the fuel rails I'm using on my holley single plane.
http://www.summitracing.com/parts/HL...-172/?rtype=10

Can I use the fuel pressure regulator that comes with it, or do I need a boost reverenced one sine I'm going FI?

How are the Aeromotive LT1 AFPR's?

 

You need a regulator that increases fuel pressure the same amount that the boost is. The pressure across the injectors needs to remain the same under any and all engine conditions for the PCM to fuel correctly.

 

Any recommendations? I think the one that comes with the holley is adjustable. I don't know if it rises on a 1:1 ratio though.