I've read many threads about whether or not the new Western Digital 750GB and 1TB will fit in a MacBook Pro. I have SUCCESSFULLY installed a 750GB in my MBP so I wanted to pass word along that it will work in that model. It's a June 2009 unibody 15" MacBook Pro (newest model with built-in battery). The standard drive is 9.5mm thick and the 750 I installed is 12.5mm. It looks like a tight fit, but it fits in there perfectly. The edge of the bottom cover doesn't bulge out and the bottom can be screwed back on and fits perfectly flush. Has anyone else been successful at putting a larger drive in their MBP? Post some replies and let's find out which models and sizes will fit the 750GB/1TB.