No internal work and the clutch is good for 300 bhp , it's got a ap fitted as standard but at 300 bhp it should be ok but I think your verging on the boarder line and may need to upgrade to be safe . I will ask Collins what they think but I've seen a lot of people running around 330 bhp without issues. They are worth every penny mate trust me as I would of not spent that kind of cash on a shit car.
defo buy the itg induction kit it transforms the sound of the car in an instant
and remember to enter B7TMY code to save 10% at aet motorsport
cheers paul