I was rear ended Monday and it bent my rear passenger side leaf spring. I need to get a used pair. My spring code says "TD" does anyone know the specs on the spring ie. length ? Can I use another spring set from a vehicle that has a different code? I have a 1998 f150 supercab 4x4 5.4l. I have an add a leaf on the rear suspension as well. Any info at all would be very much appreciated. Thanks.