^^^^ as above an plug an play, all depends on what figures you are chasing?? TD04 then go forged, but this costs!!! Myself happy with the 200bhp Blitz ECU,Electronic Boost controller, mani,decat,exhaust,actuator , does your car have an LSD?? you will need it for big power another cost. How much you looking at spending as this will be the driver for your modding. John