The best Drift car is the 1995 Mazda RX-7 when it has medium horsepower but no Stage 4 performance parts. Only the tires, brakes, and the suspension should be Stage 4. If you want more power, simply add the other Stage 4 packages:
Tuning Set the suspension three clicks softer (remember to match the settings). Cam timing - Seven clicks to the right (advance) or two or three clicks to the left. Start/End Boost - Five clicks to the right or max it out. Nitrous Pressure/Flow Rate - In the middle or slight to the right. If you like speed drifting, max it out.