I am in the process of tearing out EVERYTHING from my 01 M5 and putting a complete aftermarket system in. I will update this thread as things progress. Let's start with the parts list of the new stuff...
Alpine IVA-W505 - 7" 2 din multimedia station
Alpine NVE-P1 - removable navigation drive (no vss needed)
Alpine PXA-H100 - Imprint module
Alpine DHA-S680 - DVD/CD Changer
Alpine SPX-17REF - 6.5" component set
Alpine SPS-500 - 5.25" co-axial rear fill
Alpine SWR-1242D (2) - 12" DVC 4 ohm subwoofer
Memphis Audio 16-MCD1000 - 1100x1 @ 1 ohm sub amp
Memphis Audio 16-MCA2004 - 4 channel amp
Pac TR7 - Video bypass module (illegal I know, I don't want to hear it
PAC SWI-JACK - steering wheel control module
Mounting kit for deck from Ebay
eBay Motors: BMW 5 series E39 double din bezel &complete install-kit (item 360119388261 end time Jan-04-09 12:07:28 PST)
Now for some pictures....
Hole in dash where the Nav monitor used to be.....
Rear deck removed, speaker for the PDC. (Thanks DouglasABaker)
Subwoofer location. These are actually mounted from the bottom, but the screws have to be removed from the top.
GPS antenna (I think) on drivers side under the rear deck
Radio antenna (I think) in the drivers side rear pillar
Driver's side rear speaker loaction
Passenger's side rear speaker pod. Much larger than I thought they would be.
Trunk after my DSP Amp, Radio module, and CD changer were removed.
Wiring harness where I am going to tap into the speaker wires.