cutting springs on shocks

i might of found some rubicon shocks, i dont know though i never got a reply yet. but anyway they will be for the brute for when i drag race. more than likely they are going to be too long, is it possible to cut some coils off to make them not as long? i really dont know how many coils i will have to cut to make it right. right now i have the brute lowered about 3" and i would need the rubicon shocks to be as low as them so i will need to cut alot of coils out. im sure i could cut a little bit off the coil but is there a limit on how much i can cut off? i dont want to ruin the shocks by cutting too many coils off. hopefully someone can help me out here.
-Aaron