So I'm currently looking at a 2008 fj cruiser for sale that has the stock rear locking diff. I've heard that the differentials were beafed up after 2007 and beafed up again in 2010. I'm planning on using the FJ as my daily driver but would like to be able to go overlanding on the weekends (not planning on doing any rock crawling). I've heard horror stories about the 2007 diff but not much about 08-09 diffs. Are the 08 & 09 diffs good enough for daily driving and mild off roading or are the 2010-2015 cruisers the only ones to consider?