think around 350-400bhp you really need to be thinking of head/low comp treatment paul!?

i suggest you invest in a decent cooling system to start then maybe do a engine build on a second engine!? thats what i'm gonna do..

also maybe upgrade the fuel system as in electrics aswell as maybe doing something similar to what i am doing by using a bosch 023 to feed a swirl pot then run a bosch 044 to the rail with a pressure reg in situ to allow you to run what you need to

or just ignore me