I have an auto in mine. I have done some suspension mods. Speed3 springs front and rear, and speed3 rear sway bar. I also have the speed3 front bar yet to be installed. Also an Injen cold air intake. In the future I would like to do a balance shaft delete, and maybe a header on stock exhaust. There are a lot of things to be done on our cars mostly suspension. Not too much can be done cheaply to make more power, unless you have deep pockets and go with a turbo kit. It all depends what you want to do with the car. Autocross, track days, spirited weekend drives on curvy roads, or fast and furious style. There are plenty of people on the forum to offer advice, and threads that could help answer some questions. Good luck!