So that resevoir tank is sealed right? (It is under 58psi at all times in theory)
The stock pump feeds in the top, the bottom line feeds the secondary pump and the middle line is the return from the regulator? I'm guessing that tank holds a gallon or so?
I saw the black LMR car in Memphis and he had something similar. It was an aluminum tank in the trunk feeding a Magna-Fuel 750 ... same principal I believe.