I don't know about everyone else, but I have 2 little ones so I have to make every dollar count when it comes to buying parts for My G Body since its usually last on the list for spending on. I was going to go with Moog 5413 spring's but have watched as the price climbed over the past few months and they now sit around $80 for a set. I did some digging through the inter-change at work and found that AC Delco part # 45H2013 is the EXACT same spring! Same spring rating, same free and compressed height, same wire diameter. The best part is they were only $63 shipped from Amazon. Just wanted to pass this along.