Greens,4x4 cooler,-34 actuator,grp A coil and a 3 bar map sensor is how they should of rolled off the production line imo.
they were if im not mistaken,greens and different inlet manifold elbow then some suits said theres no way normal humans should be able to buy them, were 300BHP and told to de-tune, old wifes tale possibly but old articles on RSOC board somewhere
i wouldnt put any more boost and ignition on an unhealthy engine, do the usual compression test and oil pressure checks before you give it 60% more power lol
but yes, stage 3 is how a cossie should be, all day