I have a 2011 sportsman 400. The front "rack" is just a piece that comes on and off...no storage. My buddy just bought a 2013 sportsman 400 , and the front rack is actually a lock and ride storge bin. The atvs are both the same. My question is, can i install that kind of storage bin/rack on my 2011? on the 2013 it seems the storgage bin is actually part of the frame, but on my 2011...its simply a 'cover' or rack..without any purpose.