Because when I purchased them, only driver side were available in stock and I needed them right then and there at Summit to make a cruise. IF it turns out to be a HUGE deal, as in world ending car cannot function. It's $131.00 and about 20minutes to change it. I am aware of how the springs are designed and how they're supposed to function, they also have the ride height I was looking for. All of the input is great and it all gives me things to think about.
