MacBook Air Models A1237 and A1304 Hard Drive Replacement. How To Install an SSD in a Unibody MacBook Pro. Posted 03/08/2011 at 3:21pm | by Florence Ion If the performance of your unibody MacBook Pro just isn't cutting it, it might be time to consider swapping out the stock hard drive for something a little more speedy, like a solid-state drive. And actually, when we say a little more speedy, we actually mean that you can double the speed of your current system by swapping out the stock hard drive for an SSD. There are plenty of manufacturers who offer SSDs made especially for your unibody MacBook Pro, and physically installing the hardware is actually quite a cinch.