The Talas fork on my 2013 Reign started sinking into its travel, and the distributor told me that unless I change the damper (at a huge cost), the fork's as good as dead. Managed to get a Fox 34 160mm tapered fork but I can't slap it on the bike unless I replace the headset and get rid of the OverDrive 2 system.

Question is, which headset should I be getting? I read online that it's a ZS44-ZS56 (here and here) but I'm not entirely sure. Also, will I need anything else besides spacers and a stem?

On a sidenote, I'm stoked to try the Fox 34 even though it's a 2013 model, and just wondering how long more before I have to jump over to 27.5.