Brakes are super easy to do. Some cheap replacement Performance rotors that say they are Performance due to an increase in size, cross drilled, slotted, or a combo of both do actually do decrease Performance. If you want looks, by all means get the biggest, baddest, looking rotors. If into Performance get a big brake upgrade for the front only with better calipers like 4 piston, slotted rotors, better pads, stainless steel brake lines (of course) and for the back the same stainless steel brake lines, better pads, and rotors. No need for some super racing caliper on the backs, unless racing. No need for better calipers on the front either, unless money isn't an issue. Toyota makes some great brakes for the Celica stock. They do have a big brake upgrade for the front at, I think $2000 +. Just a better pad might suit you. But be aware of the issues with better brakes or pads. Higher Performance pads on a stock rotor will wear it out more often and give off a lot more dust. Bigger rotors, better pads, and calipers you will have to heat them up before any benefits on braking are shown. I have only heard that those big brake upgrades and some of those rotor replacements like powereslot actually decrease braking Performance. I have been looking into Project Mu for some time (several years) and those pads are available. I don't know about rotors and calipers, but I'm sure they are. If you can afford it and don't worry about the side effects go for it. Some of the best around.