Can copper be used for fuel line?

it costs 30 bucks for 20-25 ft. of steel line, including stainless and 20 bucks for aluminum. why go to copper? once again, its your car do what you want. in my shop, STEEL ONLY. end of discussion. aluminum is for race cars and planes where weight is an issue. if you cant' flare, use the tubing adaptors from earls to go to steel braided hose. scimp on valve covers or an air cleaner, something that does not affect your safety, but not fuel system components.