personally i'd go with the T3/T4
![](http://www.toyotacatalog.net/M1WebGear/partimages/1071004.JPG)
Pro Turbo - Garrett T3/T4 Hybrid Turbo (TO4E 50-Trim, Stg. 3 .63 Turbine Housing) Dynamic (High Boost)
The Garrett T3/T4 Hybrid race turbo is the next step up from our street turbo. These high-boost turbos share the same low inertia and T3 turbine wheel and T4 compressor to make this the best choice for those wanting to make 300-500 horsepower. The high-boost turbo is designed to spool fairly quickly and can support up to 500 horsepower. The high boost turbo is a Garrett TO4E 50-Trim compressor wheel with a stage 3 .63 AR turbine housing. T-3 flange, 5-bolt turbine outlet. If you're ready to make some big power, this is the turbo for you! Upgrades such as ceramic bearings are also available.