Anyways, I've decided to go ahead and begin piecing together a mild upgrade system for my GN. I've got a good deck and the amp isn't too bad (Pioneer 5200 and Kenwood KAC-748) and since it's 4-channel (35x4 RMS), I'd like to run some door speakers as well (I have the Concert sound setup). With the Pioneer 5¼" in there, it sure doesn't seem to belt out a lot of sound. Is there something I should know about those stock pods? Is there some material in there I can remove to get some more volume/tone? Also, I have some old Pioneer 6x9" mounted on the read deck in 4x10" adapters. I noticed that they sound rather flat. Is there something else there as well? The amp has internal crossovers, what should these be set to in terms of filters of dB boost? Is there anything else you would recommend to really fill the cabin?