Question on return line size......

[John McIntire]

I am running a size 8 feed line for my EFI set up. I am using an aeromotive regulator, with 10 inlets and a 6 return line.
I already bout reducers for the regulator to go from 10 to 8, but is a size 6 large enough for a return? I think i remember reading somewhere that you should use the same size line, or maybe even larger for a restriction free return.
Let me know what you guys think!
John