Wondering if someone can give me some advice on e85 fuel lines on a 87 gn . Im changing over and replace my fuel pump with a walbro 440 . Scott from cotton's told me i need to increase return line size due to the output of this pump. He tells me I need a 6 line. I have a stock fuel rail. Was thinking of using main line for return and run a completely new main line. Can i do this and if so what will i need to connect with stock fuel rail? Or is there a better way to doing this.