I wouldnt buy a 4WD drift car with the expectations of converting to to 2WD set up. Theres a fair amount of difference between a purpose built 2WD drift car and a 4WD drift car with the front drive line detached.
As for Sukura, I'm not owned one but theyve been around for a fair amount of time...
I dont own that kit but it should hold up pretty well I would think. Drift kits dont take as much abuse or go as fast as most other types of kits so durability shouldnt be to much of an issue. You can put whatever electronics you want in it, no problem there.
Are you going to be drifting with...