I am needing to replace the bottom case of my late 2006 MBP. It has a large dent in it that is causing some problems. My question is, do I need to get the exact part number listed on the bottom of my laptop (A1211) or can I get a bottom from any pre-unibody MBP i.e. A1260? Also, has anyone ever replaced this part? How difficult is it? I have experience working on laptops, I've just never taken a mac this much apart.