The street is no gauge for how a car hooks. A drag strip might look like asphalt but it is concrete with lots of VHT and tire rubber on it. That SS spring wants lots of shock travel, so you need the longest shock travel that you can find. This was usually from a SW, B or C body. Go read all the posts that Monte Smith wrote about SS springs. Read it 5, 10 + X's to start to understand what you need. BTW, those stock eliminator cars that pull the front tire way off the ground,stick or auto, are doing it on a very sticky track. They use very specific clutch set ups. When you finally get your car to hook, you will destroy that 8 3/4.