2008 Tiffin - Cummins 300 Is it a 6.7 or 5.9

I saw a Tiffin FRED 2008, 32BA and wonder if the engine is a Cummins 5.9 or a 6.7. I know Cummins changed their engine in mid 2007 and supposedly the 5.9 was a a better engine than the 2007 plus ye...