I got my springs from a local spring and suspension shop. Both bushings are pressed in from the same side. I brought an old spring with me to match it up and I noticed that the bushings on the new springs were sticking out to one side. I asked the builder about it and he said it just had to be pressed in to center it. I did, it lines up. I wouldn't use the bfh while they were mounted in the perches; you don't want to bend something that you'll have to take apart and replace afterwards anyway.