I have a 66 2 door hardtop lemans and I called Rockauto looking for a set of wagon springs to bring the rear end up a touch. They ended up sending me a set of Moog 5399 Springs... I looked them up on the Moog site and they said they are only good for 67 and above. I've done a search on here and although I found alot of info I didn't find a definitive answer. Just trying to find out before going through the hassle of ripping everything apart. Any help would be great !