Got measurements last night, and have started looking for possible replacement springs. Advanced Auto is willing to work with me, tg, and order a couple of combination of springs. I am not sure how old the donor is, but the springs don't look to meaty. The biggest problem I had after the V8 conversion, was finding mufflers (duals) small enough to provide performance and the right sound, and still fit under the car. I could not mount them too far back because of the fuel tank.