You know I thought GM would have found a protective coating for there metal fuel lines. Not. I happen to be under my G8 performing a service and low and behold I found metal fuel lines to the fuel tank under an plastic cover rusty crusty almost through. I believe they would have started leaking any minute. I know plastic and stainless is the new way because of the alcohol's attraction to water. But I highly recommend everybody check in front of the passenger rear wheel for corrosion on the lines, under an plastic cover going into the fuel tank. For safety sakes at least. If anyone has done some upgrades to the lines specifically maybe to all plastic or stainless I would be interested. I know the tank has special GM ends where the plastic lines meet the metal lines. I don't know if that causes some difficulty?