And So many Things Which You don't even Think Of.......!!
Will Name Some For You
Boost Guage(Most Imp) , Wideband(Can't Do **** without it) , Bigger Fuel Lines , Baffle For fuel Pump In Tank(In Case of Carb Model Car) , TMIC (For 7-8Psi) , Intercooler Piping/Clips, Turbo Map Sensor , Oil Temp Gauge/Water Temp Gauge , Turbo Timer , Colder Plug For Car( NGK 7 Series) .....Maybe i Forget Some More