OK Part numbers
Rocker Arm Assembly
BE32000NCT3011 (Nambo 12 13)
Connecting Rod
BF30-001CT-4512 (2013)
BE34000NCT3011 (2011 Nambo, 2012 Model)
So based off that I'd think that possibly you could.. maybe
But the frame numbers between a 2011 Nambo and 2011 Base model are
BE10000R2511 (Nambo)
BE100002511 (2011)
So you'd have to check if the difference is just an adjustment to the headstem, etc... but more likely I think it will be changes to the linkage mounts. Parts diagrams indicate this too. So not a swap and go by anymeans.
And just while we're at it.
BE10000013012 (2012 Frame)
BE10000013013 (2013 Frame)
BE10000CT-CAB-1 (2014 Frame)
Given the changes to both the frames and connecting rods, I'd almost be certain that you won't be able to just bolt up a 12 linkage and shock.