Okay, there were multiple comments/questions and I haven't seen a multi-quote option here on SN, so I'll answer them here:
We carry all different height & weight springs. Different cars and purposes require different springs. IIRC, I'm running 10-150s on my car, but like I said, everyone's car will have different needs. The beauty of using standard dimension coilover springs is that your spring length and weight choices are almost unlimited!
Derek, the spring does protrude into the wheelwell slightly. Maybe 3/16". That's why I had to mini-tub my car.