speedy- to run that much boost you SHOULD have a built motor but with a blitz or inline 3mm headgasket and some really really really good tuning you should be ok. Your car is only as good as your fuel setup. If you got all the right amount of fuel then your ok for the most part but like i said before you should build the motor. Better safe than sorry
antony

 

This one is for jason


and one for Karl