In a NA 13b setup, using the stock fuel pressure regulator what is the pressure on the fuel rail?  Is this the ideal pressure? Driving this question is I have to have to get fuel return fittings welded to my tanks, well the highest point on the tank is not in the easiest of spots to plumb to, thus I would like to return to a point about half way down the tank.  So, not only does the fuel have to be pumped up 40" or so it also has to overcome 5gal or so of fuel weight above the return fitting.  External to the rotary lists, some of those who I have floated the idea with have said the engine will run rich as the fuel rail pressure will increase.  However, it doesn't seem to make sense to me as the pressure in the fuel rail will probably be higher, much higher, than the pressure needed to overcome the push through the return fuel line. What are your thoughts?

Thank You.

-Scott
http://home.att.net/~the_stouts_zenith_801/