hi ray , I was looking at the four-door with the shackles. if you can find a 74 plymouth with leaf springs you can raise the back of your car and put the arch back in the springs. take the plymouth springs apart and use the two longest springs without the bolt holes. take your springs apart and add the longest spring to your existing springs, you may need to add only one on each side. use the longer ones first and put the original type shackles back on the car . when you are doing this you will need to use two large c-claps to compress the springs together. ps. i put 10.5 x 28.5 slicks under my car doing this. may need longer shocks also, i got mine from napa
