Will 6 inch swift springs make my BC non extreme lows lower, or do I need to modify shock body?

Hello all, I’m looking to lower the front a bit more, the front and rear are maxed out. I have bc racing br non extreme lows and was wondering if the 6 inch swift spring upgrade would be able to give me a little more low or if i would need to modify the shock body. Any insight would be very helpful. Thanks