Let me see your pics of you're double din nav headunit, or single din aftermarket radios! I'm trying to determine if I keep the stock radio, and use the jl audio cleansweep, or buy a double din nav headunit. I would like to keep it stock, but I want to add a sub as well, and I only have the basic NON BOSE radio/spkrs. How would I get a signal for the sub input on my aftermarket jl audio amp while keeping the factory radio? Also I will be adding a jl 300/4.