I struck out at the local NAPA store. They say they don't have books that go back that far anymore. However they did point me to rareparts.com. These guys were very helpful. Their engineer was on top of things, very knowledgeable, and very willing to help. Unfortunately the springs he helped me find seem expensive, $160. I have been looking at springs for about $100. Should I just spend the money to get what appear to be what I need or is there somewhere else I should keep looking?