I bought a used rhino today and was told its a 2007 450. Can someone tell me how to verify this info using the vin number, if possible? It has a very bad knock, so I started tearing it apart and found that the rod bearing is trash. My question is: 1- how far do I need to tear into it? and where can I find a manual online if it is infact a 2007 450? Any help would be greatly appreciated.