I just finished my S2000 install! (Woohoo!) I got a 'lil 200W amp, no new speakers (yet). Amber is the most appropriate color.
I needed a coupler that exposed the wires of the S2000 (Circuit City), Stereo wire (about 20'), power cord (15', 10ga), grounding cord, 10' RCA cable, amp powerup cable (10'), and the empeg coupler (included).
The only part of the dash I removed was the stereo unit cover. I fed the power line from the battery, along the back of the front trunk (there's a plastic cover that can be removed) down into the driver's pedal well. Then along the bottom of the steering column, into the stereo cabinet. From there it goes under the carpet along the transmission and through the back wall to the amp.
I'm mounting the amp in the spare tire's well. It's a tight fit and I can fall back to the trunk if needed (not done yet).
The stereo cabling follows a similar path from the stereo cabnet to the amp, but along the passenger side. I ground the amp to one of the nuts in the spare wheel well.
Getting the empeg sled in the space with all those extra cables is quite a challenge. I think I've ended up just squishing it all back there.. hope nothing is rubbing!
The empeg unit itself is easy to insert if you move the shift knob to neutral or 2-4-6th gear. I have no problems closing the stereo door, but the remote does not fit in the little slot on the door. :(
During installation, I caused several scratches to the interior, for anyone reading: be sure to keep that empeg sled wraped in a soft cloth at all times - it's sharp and will quicly poke holes in leather, or scratch the interior components.
I'm incredibly happy with the Mk II, it works perfectly and sounds beautiful.
If you have questions about my install, just ask (use e-mail, I don't check the board regularly).
--Bryan