After going over this thread, I'd have to agree with what most everyone else has said. MKI MR2s are NOT drifting cars. I've owned mine since Feb. of 2008, and I've put plenty of miles on it since I first purchased it. I have not had the luxury of taking it on a track yet, however, there are quite a few canyons close by I've run repeatedly. In all honesty I've never even broke the tires loose on dry pavement.
It is very
possible to
"drift" for
short periods of time, but not
plausible in an MR2. With a wheel base of 91.3'' (7.6'), a mid-engine lay out, and weighing next to nothing, these things handle amazingly. Good handling makes for horrible drifting.
Search some of the posts from the user "curvesrgood." He owns two MKIs, an NA and a SC, from what I've read he loves the **** out of both. Judging from most of his posts (which can usually get long

), he has a lot of experience with them and would be an excellent source of information.
By no means am I degrading your driving abilities - I'm just trying to help point you in the right direction. I am sure if you were to drive an MKI, you'd understand what the people around here are trying to explain to you. Nothing teaches better than first hand experience.
To sum it all up:
If you want a car for drifting and drifting only, get a 240 or an older Corolla (Initial D) and spare that MR2. If you want a car that will hold its ground, get the MR2.