Fuel line routing - frame connectors

Are you using steel or aluminum?I ran my 1/2 inch aluminum right where the factory did and then a hole thru the crossmember so that I could keep it on the outside of the passenger side frame.Being aluminum you can make bends using a plumber spring?I think thats what its called?Its just a spring that fits tight over it about 15 inches long that allows you to make bends in soft tube without collapsing it.