Boost gauge/meth boost hose installation

[demas]

Hey guys.
I am in the middle of installing my meth kit and i need to connect the boost line to a the vacuum hose.
This is the same hose which usually we connect in order to use the boost gauge.
Just want to make sure with you:
Is this hose is the small one which connects to the JLT CAI from the VMP S/C part number: 7R3Z-9E498-AA

Thanks!

 

[demas]

I saw some comments of the connector under the fuel rail on the passenger side, i am bit confused