these are just my thoughts but....

340bhp on a standard clutch might not neccessarily destroy it.... it would depend on the way the power comes in, and how much torque it develops, if the car is running direct [probably is as its the fashion at the mo]and how it is driven..... i'm not saying it'll be fine, just that you need to think about these factors too

i had my car custom mapped -only 280bhp but 300lb/ft from low down, now its running direct, its all happening at the top end, 290bhp now but probably better for my clutch


the standard chargecoooler has no bearing on increased power output, its the opposite way around, an uprated chargecooler will stop you losing power as the inlet temps heat up.......

more power = hotter gases out of the turbo which need cooling down

so on a standard cooler you will just heat the whole cooling system up quicker, uprated has better cooling, so will let you enjoy your power for longer but if you are doing a track day by the end of a session your inlet temps will be 50degrees and will need a good rest to let the coolant temp cool down.....