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 Management TD04, mani, decat, EWG, braided oil feed and silicone return. Get mapped There might be more but thats about it i think.