If you can find the parts that work, great. I think, since you need to attach the springs to the frame, and also to the axle that it would be a good idea to use an axle you can weld on, because you need to mount spring pads, shock mounts, stuff like that. I don't know if you can do that with an I beam axle, but you can with a cheap new tube axle, which can also be ordered in any drop. If I use a straigt axle in my coupe, it will be with new springs because I don't want to break anything after it is done. I may use a stock axle, if I can find one, but then I will be stuck with drum brakes. A new axle has the option of disk brakes.