GT30 GT3076R Stage III Ball Bearing Turbo Charger T3 4 Bolt 0.63 AR Ball Bearing GT30 GT3076R Turbo Charger , Stage III Ceramic Ball Bearing on Compressor Side .70 A/R Compressor Housing , .63 A/R Turbine Housing For Super Fast Spool 2.0L Motors Works for Many Bigger HP Applications, 400-600 HP Professional Installer Is Highly Recommend Oil /Water Cooled