Fitting an aftermarket FPR

[leeroy_25]

I am half way through my single tubro conversion and have got rid of the factory FPR. I just want to be sure I connect my aftermarket one back up correctly.. Am I correct in thinking it must be plumbed to the fuel pipe coming from the secondary fuel rail and back to the tank to work correctly?
Also where do I take the vacuum air feed from. Is it important whether it is before or after the throttle? or even on the inlet side of the turbo?

Thank you
Lee