When I built my 1st ever boosted engine I was told by the guy helping me that if you compare equal HP engines of NA and boosted that boosted is a little more friendly on parts as the power comes on a little more smoothly. How true that is I'm not sure but I have got very fortunate with all my parts over the years. The most suprising to me was the A518 trans I ran for a couple of years at around 450hp at the wheels. It held up fantastic.