I've got one coming

From what i understand the rubber hose is required due to what is called "hammering" if you used a steel line. I think this is caused by the fuel pump being "pulsed in rapid succession". They are marketing this as a returnless system. I am going to run steel lines and use a return system back to the tank just so i dont have to run the rubber hose. Rubber hose full length of the car doesn't do it for me
BB