I did an auto to manual swap on my car and I love it. Im not a hradcore racer or anything though. If you wanna get into racing a lot at the track then keep the auto. Its better in the long un and you will be able to run more consistent times if your an inexperienced driver. I swapped mine out purely for the fun of it. I did the whole swap myself for about $2000 for a new TR3650, King cobra clutch, and all the right wiring harnesses. But again I did all the work myself so I didnt have any labor costs. It took me about 50+ hours to do in my garage with the car up on blocks (no lift)