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620 refers to the rate of the spring, not the height. You can get them in stock height or 1" lower than stock. I recommend Maier Racing for coil springs. Their's come a little long, and you just cut them to achieve the desired ride height. Be aware that the 620 spring has a spring rate of 540 lb/in and the 720 has a spring rate of 650 lb/in. I have the 720's and even in the pot holed streets of northeast ohio, the ride is very acceptable.

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