I would highly recommend going Kartboy. I have not had one bad experience with mine. Got one for my Rs, then got a new one once I did my swap since they were slightly different. Pretty much have been running them for 11 years now. Whenever anyone ever asks I always recommend them. The function and quality is top notch. I work at a dealer and have installed the spt shifters and I can't say that I'm to impressed. Better then stock but not better then kartboy.