It's setup for grip at the moment, hence the semi slicks and suspension settings but with a few quick adjustments it would slide very well.
Lower it, stiffen it up, take out some camber from the rear, use different tyres, and change the wing angle and it will slide very well. The best part is all you need to do to make those changes is just adjust the gear that's already on there and choose which set of rims you want to use, the 215s on the 17x7s would be perfect for drift.
With the radiator, brakes, brake ducts and oil cooling it stays very happy. Catch can only even has oil in it if the sump has been overfilled.
The Velo holds you in awesomely too, plus the S15 rack and new rack bushes give nice direct feel.