FYI you cannot use the Dualshock 3 for that mod it has to be the SIXAXIS. Just from seeing the insides, the boards for DS3 may or may not work properly as they are different. Also the rumble pack probably won't fit. That mod is crazy difficult and very easy to screw up, probably why the guy charges so much. Might also be cooler if you used an elite/ black 360 controller to match the PS3.
But me, I'm happy with my white Dualshocks FTW.