I’m not using a Holley regulator. This is the regulator that came with a complete Edelbrock/Russell fuel system that I have.
Edelbrock 174133 Edelbrock Fuel Pressure Regulators | Summit Racing
This is similar to the system I got which is no longer available.
https://www.russellperformance.com/...60-gph-12-psi-black-silver-finish-641523.html