thanks blake i wanted to know cause i want to keep them the same but stronger i belive i'll be quite happy with the power figure i'll be getting (considering i'm used to driving my stockie 7m-ge non turbo and my girlfriends charade) i need the car to be drivable has to be used everyday but i want to be able to wind it up to 16 to 18 psi when i take it to the track and not hve the turbines fall off and kill my expensive cat as well as having dead turbos i need reliabilaty over everyting!!! if your not going use the steel turbines and they are cheap enough to send over would you concider selling to me with the berrings i'll need for a small fee ???