I own a 13" MPB 5,5 Intel Core 2 Duo. I believe it's a 2011. My computer has been experiencing hard freezes multiple times a day for about 3 years. I've upgraded the RAM, replaced the HD with a SSD and replaced the battery. The stock battery had swelled and possibly cracked or damaged the logic board. My plan is to get a cheap MBP on ebay or Craigslist and cannibalize the logic board. What models have logic boards compatible with mine? You can see the thread about my problems with this machine here: http://forums.macrumors.com/threads/macbook-pro-5-5-constant-hard-freezes.1936624/#post-22800444 Any help would be greatly appreciated. thanks!