I have almost the same fuel setup on my car and here is what I had to do... Get the bleed off kit from Magna and add one bleed from the engine regulator and another bleed from the nitrous regulator. They make a fitting that attaches both bleeds into a 8AN. (I had an extra 8AN line from my old system...

I have that same pump in my Barracuda with 2 Magna reg's...1 for the engine and the other for the spray. I had to set the bypass as high as it would go because the pump is such an animal. This is the last fuel system that you will ever need.
Enjoy it!!!