that dealer tech, don't know crap, it will not void your warranty,m I have the Hurst shifter kit on my Rt, all it is , is just eye candy as it does not improve the shifting performance, it is just a chrome cover that fits over the shaft and a new ball to screw on top. in fact I have 3 different shifter balls I can choose from for mine. now, I f you are a standard trans car, then you can get a variety of shifter for that, but that still wont void your warranty.