yeah what softy said, you don't need that much power to drift if you've got a nice suspension setup and diff, stock RB20DET's should give you enough oomph. The only gripe I have with ceffy's is their boat like swaying. Make sure its got a low center of gravity and rigid suspension and you'll be fine.
In any case you should give it a go. It'll give you a feel for the car, and you can then tweak the suspension till it handles the way you want it to. A lot of guys bleet on about "teh ultimate drift machine" which they're building up, but have never seen a second of track time.