Tom from House of Camaro contacted me about some springs I was looking for. He says that his IROC springs are BZW-front & NNB-rear and the WS-6 are BZX-front & NNL-rear. The thing is that the the WS6 fronts are stiffer than the IROC fronts but the WS6 rears are softer than the IROC rears. What's the deal?

If I cut a half coil off the BZX springs would they be too stiff? What if I got a pair of the softer BZW springs to go with the NNLs that I already have and then cut a half coil off of all four, would that be a good match?