I checked into it from a company on ebay and they told me they checked with Hurst and it wont fit. I have a 2014 R/T and love the look of the Hurst comp stick shifter. I still beat it would fit but don't want to spend that amount of money to find they changed something stupid like a clamp or something small.
According to Hurst's website the Comp Stick kit is compatible with 2008-2012 Challengers. I can't think what has changed on the later ones that would prevent the kit from fitting. It is possible that Hurst has not updated this product on its website. Below is the link to the kit's page on their website:
I don't know if anything changed after the 2012 model, but I bought one for my 2014 rt and it doesn't fit exactly right. It's very close, but the factory plate has a slight arch to it from left to right and the Hurst plate is flat. That leaves a small gap between the chrome trim plate and the shifter plate. I'm still trying to get mine to fit better. Many people might not even notice it but it bothers me.
I actually called Hurst last week. It won't fit, but they just bought a 2014, so the guy said they will probably be making one. I told him they need to offer the black plate with white knob too. I also asked if I could just get the automatic adapter to use with the white ball(that I thought came with the white ball I bought), he said no. I ordered BT.
Now I'm curious if the sxt is different from the rt. I thought they were the same, in which case it will fit. Sometimes when they have a new model year come out, they either haven't confirmed that the part will fit, so they just say no, or they just don't realize it will. You could probably talk to different people at Hurst and get different answers. I would almost guarantee it fits just fine. The one I ordered for my '14 said 2008-2012.