For drift you only need a 2530, 2535 or a GTRS. These turbos will give you between 220 and 260 rwkw, more than enough for drift, with a whole bag of torque and response.
Have you done all the other more important mods first?
- Braces
- Suspension
- Control arms
- Diff
These are far more important than a turbo upgrade, as the standard RB25, with aftermarket ecu and boost, will have plenty of power on tap.