in my trusty summit catalog i see these qa1 springs that come in different lenghts from 7" to 14" and many springs rates in each category...

now question is, what are stock spring height? and could i use that and say get a qa1 spring thats 2" less to get the 2" drop im looking for? with the correct spring rate?

would a 12" spring with a 250rate/inch give me a good drop im looking for without tucking the tires?