Yes. Hopefully the 2011 seat is an aftermarket seat. Otherwise you are just taking a crappy seat off and putting a crappier one on. So many better options out there.
yes that will work, I run a 2015 SG seat on my 14 RK when I run solo, makes it look like a RKS. Look under the seat and see if it says LOW, I think it was 2011 that the moco started using the LOW pans to give a lowered look.