You need to remove a lot of stuff. I am doing the exact same thing right now except i am leaving the 5/16 line alone. I am replacing the other 4 with teflon braided lines. I don't have the time or tool to remove the sub frame. One brake line and one fuel line rusted through and leaked. Braided line will be more flexible to work with but I am going to be routing them a little different way. GL on yours.