Originally had mine on the inside face of the R/R frame rail, near the spring eye. Worked fine well into the 10s. Changed that the 2nd time to rear body panel crossmember, near spare tire well, thinking that it'd be better to have the fuel forced into the pump, as the car leaves harder now. 1/2 aluminum hard line with -8 hoses in & out of pump and in engine compt. Using -6 from regulator to bowls. 368" footbrake Duster; some guys with big motors run larger systems.
