drag racing, daily driving or track use? I will have my car tuned on the 21st then i can email you the results and the dyno chart, i have the 530bb. All i can say is WOW the car is so responsive,fast,and very fun to drive.If you gonna track your car then i would say go with the 500s,Drag race go with the 700s depending on your Eng condition.If you have some time on your hand call SPECIALTYZ And talk to them, they will answer all your questions. Good luck