Nice car. You will need to know exactly how to use it to get optimum performance. The only thing you can really do is correct your speed if needed, because of your gears. You will also be able to adjust your air/fuel ratio, spark and timing. That will need to be tweaked since you have an off road h-pipe. How much money?? I would just take it to a professional tuner, let him dyno tune it and it's good forever. That's what I do. I haven't been back to my tuner since I got my blower installed in 2004. Not one problem.