Kenobi

Hello, I'm looking to buy a TC soon, but I'm curious about the interior height dimensions of the 2010-2013 era - I've looked at the brochures, and they say that the interior heights are very different for each year. Like the 2010 says the maximum cargo height is 59.1, but the 2011 says 53.7. I'm confused because the bodies look very similar/the same. Can any body confirm the actual heights for the different years? Thanks!