So am in the process of doing this myself, there is obviously a bare minimum of parts you need but i want mine to be reliable. So not all of these are necessary. But there is no harm in doing these all the now as you could swap to a bigger turbo setup without much hassle. So first thing i did was replace all the service parts. Timing belt, water pump, engine hoses, dizzy cap etc. Mods wise, got most but still need a few parts for peace of mind. Iridium plugs Uprated leads Triple core civic radiator FMIC Exhaust Filter 255 fuel pump FPR Paddle clutch Wideband Set of gauges