Not too many Tundra people on here. I just got an '05 Access cab with 4WD and TRD yesterday. The stock 6 speaker stereo sounds pretty poor. Is is mainly the speakers or are my going to have to change out the head unit? What size speakers are in the doors? Do they connect with just a + and - wire or do they have some kind of funky harness? How hard is it to access them? I was thinking of building a panel (I think it's called an infinite baffle, something like that) and adding an 8" subwoofer or two under one of the back seats, but I'm sure there is no wiring for it back there. Would it be difficult to get wiring back there? If I upgrade the door speakers, will that give me enough bass without adding the sub? I don't need an extremely boomy system but I like to have lows. Will I need amplification if I upgrade the door speakers? I don't even know where I'd stow an amp. Any ideas on any of this?