are my rear leaf springs still good?

I hate extension shackles. I put Caltracs and Calvert Racing mono leafs from my brother's Cuda on my Dart. They weren't high enough for me. I called Calvert Racing and they were as helpful as could be. They asked all sorts of questions and eventually sold me back half springs with the lift I wanted. I love them. They are light, give me a great lift and were pretty darn reasonable.