I have 620s right now with one coil cut off and Koni adjustables. With it right now bouncing on the front end I can only make it move about an inch. I don’t run a sway bar and with the springs I have now the springs come lose when I jack up the front end. Now that I'm getting more into drag racing and will have better tires soon I want a spring that won’t come unseated if there is much weight transfer. I can only seem to find 620s or 240s which says racing only, nothing in the middle. The 90/10 shocks are also racing only but it seems that people say they are fine on the street and highway.