I have a set of the early pedestal mount afr 165's on my car and i believe i'm experiencing valve float. The valve springs are the standard afr springs and now have about 60k on them. I was looking at purchasing the crane 987's, and was wondering if anybody had used these? I know ed curtis has drop in spring packages, but he's tougher to get ahold of than the president, i've emailed about this twice to no avail... Any recomendations appreciated.