I'm trying to build the fuel system large enough so I don't have to change things down the road. I'm using a -10 feed to Holley high flow rails and FIC 127lbs injectors. Should be good for 1000 wheel on e85 from the reading I've been doing. Here's on of the y blocks two -8 lines from the pumps to a -10 feed. Still waiting on more pieces to come in.