The conventional wisdom is to say to shy away from the shifter but I have put a bunch of road race guys in to shifters and DD2 karts and they did fine. If you are a racer, you’ll make the transition fine. Take a look at the DD2 though – my guys have loved those. The guys at Dallas Kart Complex (or probably Houston Kart Complex too) have had arrive and drive DD2 karts in the past and they really know the product. Worth a call.