Sorry it has 2 inlets in the reg at dash 10 so one from each rail on a v8 not from the tank but as long as it can't hurt I'm happy with dash 8. They seem to all spec a larger delivery hose, say dash 10 or 8 and a smaller return an 8 or a 6 to allow room for fuel used. Do you know is there a calc for fuel to hp ratings? Cheers