Where Is The Fuel Pressure Regulator??

Dumb Question:
On a 2000 Sonoma 4x4, 4.3, Where is the Fuel Pressure Regulator. I woulda thought it would be easily visible on the fuel rail back by the firewall but we don't seem to see it??

Thanks,
Gene

It's under the upper intake, it's integrated into the fuel injector spider on your truck.