Wait, is it true that the 17" can fit 12.5mm drives without problems?
The original model MacBook Pros, only the 17" models can support 12.5mm drives. I've opened my system up and checked the height and its possible without any problems.
In fact, I'm using a Wireless-N that was designed for an iMac in my Core Duo MacBook Pro, even though they said it "won't fit", it fits.