The way I set my fuel system up, the regulator is mounted right in front of the tank. The supply line from the tank is -8, the return line is -8, the fuel line out of the regulator is -8 as well. From there is runs to the Trickflow 10 micron filter that has the built -8 fittings. Directly connected to the output of the filter, I used a -8 to -6 reducer coupling and the fuel pressure take off fitting is connected to that. From there, it's -6 line to the fuel rail.

Scott-Appreciate the info - Thank you

Rich

LS-x Fuel Regulator
 

I weld a Stainless Steel "bung", a 12mm X 1.25 nut with one end rounded to the internal size of the Stainless fuel rail tubing opposite the entry rail.

I then add an "COTS" Commercial Off The Shelf fuel regulator, threaded on the fuel entry end with manifold vacuum reference.

One thing to remember is that when the "regulator" is "manifold vacuum" referenced, the BARO correction will be a normal decreasing slope as the altitude is increased.

When the "regulator" is "open to free air" for pressure reference, the BARO correction will be inverted as the altitude is increased. (more fuel needed at light load).

Lance