My 2cents. With the quality of springs nowadays,I`d use 2 springs. That way if one breaks ,you`ll feel the resistance drop and know somethings wrong ..but you can still drive.
~ BD. "You won't find me in an old folks home" Pioneer Florida Cracker 1958 Apache Stepside 1958 Apache 1/2 ton Panel 1959 Apache 1/2 ton Panel