How fast do you want this car to go on the motor and on NOS? What year and body style are you working on? The primary pipes size is probally going to limit how much power your motor will make on N/A as well as on the NOS I love 4 speed cars, I'm working on putting a 1966 Dodge Coronet Deluxe with a 440 motor and NP 833 O.D. tranny together this summer, I also have a 1969 Dart GTS 383 4 speed car to drive in the meantime To many toys and not enough time to enjoy all of them