I have both an N/A and an SRT. There is no way a N/A would keep up with an SRT either on the twisties or a strip! Manual or auto, modded or not. The level the SRT is at standard is far greater than you could get an N/A to with a sh*t load of mods!Engine, suspension, brakes. To get an N/A anywhere near an SRT you would need to spend so much more money, you may as well buy an SRT and not work for a year! The manual gearbox of a 6 speed pales into complete insignificance when compared with an SRT!