Yeah carriers have to be updated. I am going to be doing the same in about 2 weeks. I decided to bite the bullet and since I already have to upgrade the carrier I'm throwing an ARB locker on the back. Might as well put the money toward it rather than a carrier.
I also have a 2010 sport 6 spd with the Dana 30 up front and the 44 in the back. I'm also going to 4.88s.