Hey that looks pretty damn sweet!! Where did you get that clear case? I have an old style PS2 as well and I like what you've done with yours. 
I just bought it online. The old style run about 40-50 with an import player. The newer ones are only about 20-30 -_-;
Be really careful with them though. They're made of acrylic and break easily if you drop it or tighten the screws too much.
Some things to remember-- Be REALLY careful with everything! I wore latex gloves so I wouldnt get finger prints all over the inside. Don't put the screw covers in until you're POSSITIVE you're done; they DO NOT come back out in one piece. Also, make sure you keep the rubber feet to reuse, because that acrylic is slick. The new clear power button assembly needs to be screwed into the CD drive case where you take off the top. Tap into the USB ports for power. They're under a little metal guard on the front left side. The left most post is +5 and the right most is the ground. I soldered on a 1" piece of wire with a female plug on it. I then put all the light wires into a single male plug. This is for both the ground and +5. I'd show you a picture of how I soldered the resistors onto the wire and the LED, but I'm not opening my PS2 EVER again.

I also used 24gauge speaker wire to keep things tidy.
Just as a warning- Mine did come with a crack in the back. When I tried to contact the company they just ignored me. Becareful where you shop.