Mallory 4305M help

[diabolical1]

Hi All,

I'm finally starting to setup the fuel system on my '87 and I have a question on my fuel pressure regulator. It's a Mallory 4305m
http://www.jegs.com/InstallationInst.../650-4305M.pdf

My question is basically about the how to setup my return. As you can see, the regulator itself has it's own return and it MUST remain functional. However it leaves the quandary of how to handle the stock return from the rail.

So do I:

1. Use a "Y" fitting to collect both the rail return and the regulator returns to go back to the tank?

OR

2. Dead end the rail return and use ONLY the regulator return?

Other information that may (or may not) be relevant includes I'm using a -6 AN fittings, but they ultimately are using the stock (-4) hard lines to and from the tank. I'm also running an FD pump.

Thanks for any help and if anyone has any links of photos, please feel free to include them.

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