There was also that guy in New Zealand that converted his RS Vr4 to RWD.
Not sure if you mean me or not - mines not an RS, but was rwd for a couple of years.
There are a number of other rwd vr4's and evo's here though.
In my experience axles tend to break before diffs. Everyone who drifts nissans breaks stuff though...
With my 170kW there's the same power going through the t-case and rear end as a 340kW 4wd car - they don't tend to break stuff too often (3 bolt axles aside).
If you wish to build a pro drift car that's competitive (300+kW @ wheels), go north south with a proper gearbox (not a production one) and something like a turbo GTO rear end.
If you just want to have abit of fun, and improve your car control, whip those front shafts out!