i was wondering, which would be better for a boxster s.

custom supercharger system (max 200 hp increase, min 120 hp)
or
a gt3 or gt2 engine transplant if possible.

either way im talking 400hp. What parts of the car do you think need beefing up? can the stock transmision (triptronic), power train, chassis handle this power.

all this would be done after 30,000 km.

i know some of you might disagree with tuning the engine, (RC) but i would still like to enquire about the possibility and cost.