Ok I want to go with a fuel lab external pump so I can feed my Stage 2 motor enough E-85, I currently have a RA double pump that will not keep up . How do you feed the pump with the stock tank ? Do I need to add a sump to the stock tank ?? Also can you run a #10 feed to the rail in the stock location and keep the fuel regulator in the stock location .. Has any one done this setup and do you have any install tips or pics?? My combo is a Stage 2 4.1 stroker with 120# injectors and a solid roller 224/224 74 GTQ turbo, Alky injection , etc.....