I don't go by 1 coil or 2 coils anymore. A more precise way to get what you need is to measure the car at it's current height and calculate how much you want to lower. I wanted my plymouth about 3 inches lower in the front. I measured my spring when it was out of the car and cut 1 and 1/2 inches of height from the coil. It ended up being about 1 complete coil and almost a quarter of the next. Came out perfect.