You can drift GTR cars, but, they are bit of a handful and takes LOTS of chassis tweaking and practice. ALso, their drift styles are not as dramatic as road cars such as xrt or LX6. Slicks, lack of steering angles and different suspension geometries are just a few things that make it hard to drift a GTR. You usually need max caster, strong front wing setting, stiff rear shocker bound setting, stiff rear sway bar setting, and fairly dramatic rear camber to get them go side ways.
They are only good for some high speed drifts (hi speed, low angle), but if u r into show drift (big angles, low speed) then I recommend u to stick to the road cars.